BULLETIN NO. IMD-D
DRAWING NO. LP0190
REVISED 3/97
RED LION CONTROLS
INTERNATIONAL HEADQUARTERS
20 Willow Springs Circle, York, Pa. 17402, (717) 767-6511 FAX: (717) 764-0839
Web site- http://www.redlion-controls.com
E-mail- sales@redlion-controls.com
EUROPEAN HEADQUARTERS
892 Plymouth Road, Slough, Berkshire SL1 4LP
ENGLAND +44 1753 696888 FAX: +44 1753 696339
MODEL IMD -
APOLLO 4½-DIGIT INTELLIGENT METER FOR DECADE VOLT/CURRENT INPUTS
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40,000 COUNT MEASUREMENT RESOLUTION
(can be scaled to ±99,999 display)
TWO MODELS TO CHOOSE FROM:
IMD1 VOLTAGE METER (accepts ±2 VDC to ±300 VDC input)
IMD2 CURRENT METER (accepts ±200 µA DC to ±2 A DC input)
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MULTIPLE RANGES (user selectable)
EASY ONE-PASS SCALING
STATE-OF-THE-ART DIGITAL ELECTRONICS FOR GREATER
ACCURACY AND RELIABILITY
FULL 6-DIGIT, HIGH VISIBILITY, 0.56” (14.2 mm) HIGH RED LED
DISPLAY
PROGRAMMABLE FRONT PANEL LOCK-OUT MENU
INTEGRATOR (totalizer) AND LINEARIZER (optional)
PEAK/VALLEY MEMORY AND TARE (re-zero) FUNCTION (optional)
DUAL ALARM RELAY OUTPUTS (optional)
BI-DIRECTIONAL SERIAL COMMUNICATIONS (Optional)
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4 to 20 mA or 0 to 10 VDC ANALOG OUTPUT (Optional)
NEMA 4/IP65 SEALED METAL FRONT BEZEL
DESCRIPTION
The Apollo Intelligent Decade Volt and Current Meters accept a wide range
of input signals and precisely scales them into engineering units. The IMD Volt
Meter accepts inputs from ±2 VDC to ±300 VDC in one of four ranges. The
IMD Current Meter accepts inputs from ±200 µA DC to ±2 A DC in one of five
ranges. A full 6-digit display accommodates nearly any engineering units and
holds large totalization values. State-of-the-art digital circuitry virtually
eliminates errors due to drift. A full complement of option packages are
available to fulfill many process applications.
Both models feature a choice of two different scaling procedures which
greatly simplify initial set-up. English Style display prompts and front panel
buttons aid the operator through set-up and operation. A front panel lock-out
menu protects set-up data and operation modes from unauthorized personnel.
Programmable digital filtering enhances the stability of the reading.
Programmable remote input
“E1-CON”
pin can be utilized to control a variety
of functions, such as totalizing, alarm control, display hold or tare operations.
All set-up data is stored in E
2
PROM, which will hold data for a minimum of 10
years without power.
An optional integrator
(totalizer)/linearizer
can be used to totalize or
integrate signals up to a maximum display value of 999,999. It features
independent scaling and a low signal cut-out to suit a variety of signal
integration applications. Additionally, nine slopes and offsets can easily be
programmed with this option to linearize transducers with non-linear outputs,
such as square law devices. Optional programmable remote input
“E2-CON”
pin can be utilized to control a variety of functions, such as totalizing, alarm
control, display hold or tare operations, simultaneously with
“E1-CON”
pin.
Peak/valley
(max/min)
reading memory, display hold and a signal re-zeroing
(tare)
function are included with this option and they are easily recalled and
controlled by either the front panel or a remote switch. All readings are retained
at power-down.
Optional dual relays with parallel solid state outputs are fully programmable
to operate in a wide variety of modes to suit many control or alarm applications.
Optional 20 mA loop, bidirectional serial communications provides
computer and printer interfacing to extend the capabilities of the indicator. More
than one unit can be connected in the loop with other RLC products which have
serial communications capabilities.
An optional 4 to 20 mA or 0 to 10 VDC re-transmitted analog output can be
scaled by the user to interface with a host of recorders, indicators and
controllers. The indicator has several built-in diagnostic functions to alert
operators of any malfunction. Extensive testing of noise interference
mechanisms and full burn-in makes the indicator extremely reliable in industrial
environments. The die-cast front bezel meets NEMA 4/IP65 requirements for
washdown applications. Plug-in style terminal blocks simplify installation
wiring and change-outs.
SAFETY SUMMARY
All safety related regulations, local codes and instructions that appear in the
manual or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
Do not use this unit to directly command motors, valves, or other actuators
not equipped with safeguards. To do so, can be potentially harmful to persons
or equipment in the event of a fault to the unit.
SPECIFICATIONS
1.
DISPLAY:
6-digit, 0.56”
(14.2 mm)
High LED, minus sign displayed for
negative values.
“Flashing”
display for totalizer overflow. “......” displayed
for input display out of range. “OLOLOL” displayed for input display
overload and “ULULUL” for underload
(negative overload).
2.
POWER REQUIREMENTS:
AC Power:
Switch Selectable 115/230 VAC, ±10%, 50/60 Hz, 14 VA
DC Power:
10 to 30 VDC, 9 Watts max., isolated to 300 Vp.
3.
CONTROLS:
Three front panel push buttons for modifying alarm values
and indicator set-up. Two external inputs for disabling the front panel and
controlling programmable functions.
PANEL CUT-OUT
DIMENSIONS “In inches (mm)”
Note: Recommended minimum clearance (behind the panel) for mounting clip installation is 2.1” (53.3) H x 5.5” (140) W.
1
SPECIFICATIONS (Cont’d)
4.
INPUT RANGE/RESOLUTION, ACCURACY, INPUT IMPEDANCE
AND MAXIMUM INPUT LEVEL:
VOLTAGE
ACCURACY % OF
RANGES/RESOLUTION
FULL SCALE
R (ohms)
MAXIMUM INPUT
±2.0000 V/0.1 mVDC
±20.000 V/1 mVDC
±200.00 V/10 mVDC
±300.0 V/100 mVDC
0.025%
0.1%
0.1%
0.1%
1
1
1
1
MEG
MEG
MEG
MEG
70 VDC
300 VDC
300 VDC
300 VDC
MAXIMUM INPUT
CURRENT
ACCURACY % OF
RANGES/RESOLUTION
FULL SCALE
R (ohms)
±200.00 µA/10 nA DC
±2.0000 mA/0.1 µA DC
±20.000 mA/1 µA DC
±200.00 mA/10 µA DC
±2.0000 A/0.1 mA DC
0.1%
0.1%
0.025%
0.15%
0.8%
1K
100
10
1.0
0.1
2 mA DC
20 mA DC
200 mA DC
1 A DC
5 A DC
On all current ranges, there is a 0.2 volt DC drop.
Note: Any individual range may be recalibrated (scaled) to 0.025% accuracy
with appropriate calibration equipment.
5.
PROGRAMMABLE DISPLAY READING RANGE:
-99999 to 999999
6.
READING RATE:
2.5 readings/second
7.
RESPONSE TIME:
2 seconds to settle for step input
(increases with
programmable digital filtering)
8.
TOTALIZER:
Front panel button for input/total display select
programmable time-base, scale factor (0.001 to 100.000) and low-end cut-
out. Response Time = 0.2 sec. max.
9.
E1-CON AND E2-CON:
External remote inputs which allow activation of
various functions (reset total, peak indicator mode, trigger mode, etc.).
V
IL
= 0.8 V
MAX
; V
IH
= 2.0 V
MIN
; Response Time = 0.2 sec. max.
10.
NORMAL MODE REJECTION:
35 dB @ 50/60 Hz
(may be improved
by programmable digital filtering)
11.
COMMON MODE REJECTION:
120 dB, DC to 50/60 Hz
12.
ENVIRONMENTAL CONDITIONS:
Operating Temperature Range:
0 to 50
o
C
Storage Temperature Range:
-40 to 80
o
C
Operating and Storage humidity:
85% max (non-condensing) from 0 to 50
o
C
Volt Meter
Current Meter
ENV 50140 - Radio-frequency radiated electromagnetic field
1
ENV 50141 - Radio-frequency conducted electromagnetic field
2
EN 61000-4-2 - Electrostatic discharge (ESD)
3
EN 61000-4-4 - Electrical fast transient/burst (EFT)
Notes:
1. Unit mounted in a metal panel connected to earth ground (protective
earth) with rear cover providing at least 10 dB of shielding effectiveness.
a. When units are mounted in a metal panel without a rear cover, the
process signal can vary as much as 2% from the stated accuracy
specification, and the 4 to 20 mA analog output option can vary as
much as 16% from the stated accuracy specification.
2. One ferrite suppression core (Steward #28-B2025-0A0) placed on the 20
mA serial communications cable at the unit for EMI frequencies above 40
MHz.
3. Metal bezel of unit connected with ground lead from rear bezel screw to
metal mounting panel.
Refer to the EMC Compliance Installation section of the manual for
additional information.
19.
CONSTRUCTION:
Die-cast metal front bezel that meets NEMA 4/IP65
requirements for indoor use when properly installed.Installation Category II,
Pollution Degree 2. Case body is black, high impact plastic (panel gasket and
mounting clips included).
20.
CONNECTION:
Removable terminal blocks.
21.
WEIGHT:
1.2 lbs.
(0.54 Kg)
EXCITATION OPTION
The excitation option provides a regulated excitation voltage
(18 VDC, 60
mA)
that can be used to power the transducer.
TOTALIZER/LINEARIZER/PEAK/VALLEY/TARE/
E2-CON OPTION
The major feature of this option is its integrator/totalizer
(accumulator).
The
integrator simply totals
(adds)
input readings with a programmable time base
and scaling coefficient. The integrator/totalizer may be reset via a remote input,
by the front panel or through the serial communications loop. Alarms may be
programmed to trigger from totalizer values, for example to signal total flow
thresholds for batching operations. A programmable low signal level disable
feature completes the integrator/totalizer features. At loss of power to the
indicator, the contents of the totalizer are saved.
The linearizer feature is a series of programmable scaling points that are used
to construct linear segments to linearize the input signal. The most common
application would be to interface with square law devices
(generally, flow
transducers).
A maximum of nine segments are available and using nine
segments for a square law device would reduce linearity errors to 0.35%.
The other features of this option are peak and valley detection and a re-zero
(tare)
function. The indicator will record the lowest reading
(valley)
and the
highest reading
(peak),
automatically, for later recall. This information is
valuable when monitoring the limits of the process over any length of time
(shifts, days, etc.) since these values are stored at power-down. Optional E2-
CON input pin can be programmed to reset or engage the unit into a peak
reading indicator. Additionally, the peak and valley can be viewed and reset
from the front panel, if so programmed, and viewed and reset through the serial
communication option.
The re-zero
(tare)
function can also be controlled externally or by the front
panel. This feature can quickly compensate for small shifts or drifts in the input
signal or to re-zero every operation, such as batching.
Span Temperature Coeff.:
50 ppm/
o
C 80 ppm/
o
C
Zero Temperature Coeff.:
1 µV/
o
C
1 µV/
o
C
Altitude:
Up to 2000 meters
13.
EXCITATION (Optional):
18 VDC @ 60 mA max.
14.
SERIAL COMMUNICATIONS (Optional):
Type:
Bi-directional 20 mA current loop, 20 mA source provided on transmit
loop.
(Powers up to 7 units in a loop with internal current source.)
Baud Rate:
programmable 300 to 2400
Maximum address:
99
(Actual number in a single loop is limited by serial
hardware specifications.)
Data Format:
10 bit frame, Odd parity
(one start bit, 7 data bit, one odd
parity bit, and one stop bit.)
Serial Hardware Specifications:
SO - Output Transistor Rating:
V
MAX
= 30 VDC,
V
SAT
= 1 V
MAX
at 20 mA.
Note: This will allow up to 28 units max. in each loop.
SI - Input Diode Rating:
VF = 1.25 V
TYP
; 1.5 V
MAX
Note: The compliance voltage rating of the source must be greater than the
sum of the voltage drops around the loop. (Typically a 30 VDC powered
source would be capable of operating between 18 and 22 units in a
loop.)
15.
ALARMS (Optional):
Solid State:
Two, isolated, sinking open collector NPN transistors acting in
parallel with relays. Imax: 100 mA @ V
SAT
= 1 V. V
MAX
: 30 VDC.
Relays:
Type:
Form C (2)
Max. Rating:
5 Amps @ 115/240 VAC or 28 VDC
(resistive load),
1/8 hp
@ 120 VAC
(inductive load).
Relay Life Expectancy:
100,000 cycles at max. rating.
(As load level
decreases, life expectancy increases.)
16.
ANALOG OUTPUT (Optional):
4 to 20 mA:
Digital scaling and offsetting within 4 to 20 mA range
Accuracy:
0.1% of full scale
Resolution:
12 bits
Compliance Voltage:
10 VDC
(500
W
max. loop impedance)
0 to 10 VDC:
Digital scaling and offsetting within 0 to 10 VDC range
Accuracy:
±(0.1%
of reading +35 mV)
Resolution:
12 bits
Min. Load Resistance:
10
W
(1 mA max.)
17.
LINEARIZER/PEAK/VALLEY/TARE (Optional):
9-segment multiple slope scaling for non-linear inputs. Peak and Valley
recording. Signal re-zero
(tare).
18.
CERTIFICATIONS AND COMPLIANCES:
EMC EMISSIONS:
Meets EN 50081-2: Industrial Environment.
CISPR 11 Radiated and conducted emissions
EMC IMMUNITY:
Meets EN 50082-2: Industrial Environment.
ISOLATED ALARM OPTION
The alarm option consists of an additional printed circuit board with 9
terminals. Six of these terminals are for the two Form-C relays and the other
three are for the two open collector transistors, which act in parallel with the
relays. The two alarms are completely independent with programmable values,
hysteresis
(deadband),
high or low acting, auto or manual reset, triggering from
input or total and they can be programmed to track each other, if desirable. If
the alarms are programmed to latch
(manual reset),
then they can be reset either
by the front panel or a remote input. The alarms can be set to trigger from either
the integrator/totalizer or the input display, to actuate external alarms, control
valves, etc.
Alarm #1 can be programmed to track Alarm #2 by enabling alarm tracking.
This is useful in alarm set-ups where a pre-warning control activates before a
second alarm shuts off the process when tracking is programmed. Changing the
shut-off trip value
(alarm #2)
automatically changes the pre-warn value
(alarm
#1)
an equal amount. Alarm and hysteresis values can be modified through the
optional serial communications to provide automatic control.
ISOLATED SERIAL COMMUNICATIONS OPTION
The serial communication option is a half-duplex, two-way 20 mA loop that
can connect to a variety of printers, computers, terminals and controllers to suit
many data-polling or automatic operation applications. The indicator responds
to a host of commands, including change alarm value, reset totalizer and
transmit input signal. Two loops are required for all hook-ups; a transmit
(out-
going data)
loop and a receive
(in-coming data)
loop. Since the indicator
monitors the receive loop for a busy signal
(current interrupted)
while
2
transmitting, the receive loop must be connected even if the indicator is
transmitting only, such as to a printer. A built-in 20 mA source is provided in
the transmit loop. Additionally, multiple units and other Red Lion Controls
instruments can be serially addressed, with a maximum address capability of 99
units.
(Note: There are hardware limitations which restrict this to a lower
number of units per serial loop.)
IMD DECADE VOLT METER TOTALIZER EXAMPLE
A transducer with a 0 to 10 VDC output that corresponds to 0-100.0 amps is
used to monitor the current of a high capacity pump used in a chemical
production facility. In addition to indicating pump current, an indication of
pump activity is required for lubrication and maintenance purposes. Pump
current increases with low viscosity fluids and taken with total time of operation
is proportional to pump wear. The amount of pump activity is therefore related
to the totalized pump current between maintenance intervals. The Intelligent
Decade Volt Meter with excitation voltage, totalizer and alarm options is used
to satisfy this application.
The ±20 VDC range is selected to accept the 0 to 10 VDC pump current
signal. The 0 to 10 VDC signal is easily scaled into a readout of 0-100.0 amps.
The built-in 18 VDC excitation voltage is used to power the transducer. The
optional totalizer is scaled to read directly in amp-hours and Alarm #1 is
programmed to trigger at 10,000 amp-hours to inform personnel with visual
indication that maintenance is due. Alarm #2 is programmed to trigger when the
pump current exceeds 15% over maximum
(115.0 amps)
indicating an overload.
In order to assure correct totalization between maintenance intervals, the front
panel is
“locked out”
to protect the totalizer value and other programmed data
from accidental or unauthorized modification. After maintenance, the totalizer
is reset to zero by a remote input to restart the process.
“6”
- reset peak and start peak indicator
“7”
- reset valley and start valley indicator
“8”
- reset latched alarms
“9”
- reset all alarms
“10”
- toggle display between input and total
“11”
- re-zero input and totalize the tared values
“12”
- display hold with tare
“13”
- instrument reading synchronization
“14”
- print request
“E2-CON” - Same function as “E1-CON”
“Pro 5” - PROGRAM TOTALIZER
“dECPNt” - Enter decimal point for totalization
“tbASE”
- Enter time base
“0”
- second
“1”
- minute
“2”
- hour
“SCLFAC” - Enter multiplying scale factor
“Lo-cut”
- Enter low-signal cut out
“Pro 6” - PROGRAM ALARMS
“trAc”
- Enable alarm value tracking
“dISP”
- Enable display alarm annunciators
“LAtC-1” - Enable alarm #1 latching
“ASN-1” - Enter alarm #1 trigger source
(input or total)
“AL-1”
- Enter alarm #1 value
“HYS-1” - Enter hysteresis value for alarm #1
“Act-1”
- Enter alarm #1 action
(high or low)
“LAtC-2” - Enable alarm #2 latching
“ASN-2” - Enter alarm #2 trigger source
(input or total)
“AL-2”
- Enter alarm #2 value
“HYS-2” - Enter hysteresis value for alarm #2
“Act-2”
- Enter alarm #2 action
(high or low)
“Pro 7” - PROGRAM SERIAL COMMUNICATIONS
“bAud”
- Enter baud rate
“AddrES” - Enter loop address number (0-99)
“Print”
- Enter print function, or “P” command function through
Serial Option
“0”
- input
“1”
- input, peak/valley, and tare
“2”
- input and alarms
“3”
- input, peak/valley, alarms, hysteresis, and tare
“4”
- total
“5”
- input, total
“6”
- input, total, peak/valley, and tare
“7”
- total and alarms
“8”
- input, total and alarms
“9”
- input, total, peak/valley, alarms, hysteresis, and tare
“FULL”
- Enable complete or abbreviated printing
“Pro 8” - PROGRAM RE-TRANSMITTED ANALOG OUTPUT
“ASIN”
- Select source of analog output (input or total)
“AN-Lo” - Enter 4 mA or 0 VDC display value
“AN-HI” - Enter 20 mA or 10 VDC display value
“Pro 9” - SERVICE OPERATIONS (Protected by access code)
* -
Entire sequence for this modular step is not shown (see manual for further
details).
=
-
This sequence may be subject to being locked-out due to other
programmed sequences.
ISOLATED RE-TRANSMITTED ANALOG OUTPUT
OPTION
4 to 20 mA
The re-transmitted analog output option transmits a digitally programmable
4 to 20 mA current to drive chart recorders, remote indicators and controllers.
The compliance is 10 VDC. Non-standard current ranges within the 4 to 20 mA
range can be supported by calculating the slope and intercept of the
display/output and calculating the required display values at 4 and 20 mA.
0 to 10 VDC
The re-transmitted analog output option transmits a digitally programmable
0 to 10 VDC output signal to drive chart recorders, remote indicators and
controllers. Non-standard voltage ranges within the 0 to 10 VDC range can be
supported by calculating the slope and intercept of the display/output and
calculating the required display values to 0 VDC and 10 VDC.
PROGRAMMABLE FUNCTIONS
Programming of the IMD is divided into modular steps. Each module is a
short sequence of data entries. The front panel buttons
“UP”
and
“DOWN”
(shown as arrows on the front panel)
are used to change the data and set-ups,
while the
“P”
button is used to
‘save’
or
‘enter’
the data. After pressing
“P”
which gains entry into the programming mode, the programming modules are
identified by the message
“Pro”
and a number in the display.
“UP”
and
“DOWN”
are used to select the desired programming module and
“P”
is used
to enter it. All of the subsequent programming steps follow the same
procedure. The rear terminal labeled
“PGM. DIS.”
must be disconnected
from ground to gain access to programming. The following table lists the
programming steps.
“Pro 0” - RETURN TO MEASUREMENT MODE
“Pro 1” - SCALE UNIT BY APPLYING SIGNAL
“dECPNt” - Enter decimal point for scaled display
“round”
- Enter rounding factor and trailing zeros for scaled display
“SCALE” - *
“dSP 1”
- Enter display reading for scaling point #1
“INP 1”
- Apply signal level for scaling point #1
“dSP 2”
- Enter display reading for scaling point #2
“INP 2”
- Apply signal level for scaling point #2
“SEGt”
- *
“Pro 2” - SCALE UNIT BY KEY-IN SIGNAL LEVEL
“dECPNt” - Enter decimal point for scaled display
“round”
- Enter rounding factor and trailing zeros for scaled display
“SCALE” - *
“dSP 1”
- Enter display reading for scaling point #1
“INP 1”
- Enter signal level for scaling point #1
“dSP 2”
- Enter display reading for scaling point #2
“INP 2”
- Enter signal level for scaling point #2
“SEGt”
- *
“Pro 3” - PROGRAM FUNCTIONS ACCESSIBLE WITH FRONT
PANEL LOCKOUT ENGAGED
“dSP AL” - Enable display alarms
“ENt AL” - Enable enter alarms
=
“dSPHYS” - Enable display hysteresis
“ENtHYS” - Enable enter hysteresis
=
“rSt AL” - Enable reset latched alarms
“dSPbUF” - Enable display of peak/valley readings
“rStbUF” - Enable reset of peak/valley readings
=
“SELdSP” - Enable switching display between input and total
“rSttOt”
- Enable reset total
“tArE”
- Enable re-zero (tare) of input signal
“Pro 4” - PROGRAM DIGITAL FILTERING AND REMOTE INPUT
FUNCTION
“FILtr” - Enter level of digital filtering
0
- no digital filtering
1
- normal filtering
2
- increased filtering
3
- maximum filtering
“E1-CON” - Enter function of remote input (Reset/Hold)
“0”
- re-zero input
“1”
- reset total
“2”
- reset and gate totalizer
“3”
- gate totalizer
“4”
- display hold
“5”
- reset peak/valley
3
IMD DECADE VOLT METER TOTALIZER EXAMPLE (Cont’d)
BASIC PROGRAMMING STEPS
“Pro 1”.........”dECPNt”
“round”
“SCALE”
“dSP 1”
“INP 1”
“ dSP 2”
“INP 2”
“ SEGt “
“Pro 3”.........”dSP AL”
“ENt AL”
“dSPHYS”
“dSPbUF”
“SELdSP”
“rSttOt”
“tARE”
“Pro 4”.........”FILtr”
“E1-CON”
-
0.0
-
0.1
- YES
-
0.0
-Apply 0.000 VDC
- 100.0
-Apply 10.000 VDC
-
1
-
-
-
-
-
-
-
YES
NO
NO
NO
YES
NO
NO
D.T.D.P. =
Desired Total Decimal Point
0
0.0
0.00
0.000
0.0000
Process Display Decimal Point
0
0.0
0.00
0.000
0.0000
Enter In Formula
1
10
100
1000
10000
Enter In Formula
1
10
100
1000
10000
P.D.D.P. =
S.F. = 100.0 x 3600** * x 10
100.0
3600
10
S.F. = 1 x 1 x 1
S.F. = 1.000
[
]
- 1 (normal)
-1 (rst. total)
TOTALIZER SET-UP
With an average signal input which gives a display of 100.0 amps for a 1
hour time period, the following formula applies.
S.F. = D.T. x
P.D.
*
This value is normally 1, but can be used as a coarse scale factor of 60 or
3600.
**
Since the time period is in minutes, the selected T.B. is 3600 (program select
value = 2) which equals time base in hours (3600 sec.).
“Pro 5”.........”dECPNt”
“tbASE”
“SCLFAC”
“Lo-cut”
“Pro 6”.........”trAC”
“dISP”
“LAtC-1”
“ASN-1”
“AL-1”
“HYS-1”
“Act-1”
“LAtC-2”
“ASN-2”
“AL-2”
“HYS-2”
“Act-2”
-
-
-
-
0.0
2
1.000
0.0
[
T.B. * x D.T.D.P.
Time
P.D.D.P.
]
S.F. = Programmable Scale Factor
D.T. = Desired Total For A Fixed Time Duration
T.B. = Programmable Time Base
T.B. =
If Program Select Number Chosen Is:
“0” for sec.
=
“1” for min.
=
“2” for hr.
=
Enter In Formula
“1”
“60”
“3600”
P.D. = Process Display Value
Time= Actual Time Period In Seconds
-
NO
-
NO
-
NO
- tOtAL
- 9999.9
-
0.1
-
HI
-
NO
- InPUt
- 115.0
-
1.0
-
HI
IMD DECADE CURRENT METER APPLICATION EXAMPLE
A manufacturing company is in the process of modernizing and updating their control panels for a
more efficient operation. In order to monitor various processes which are being performed, several
“old style”
analog panel meters are currently being used for display purposes. These meters receive
their input from transducers which output 0 to 1 mA. Operators must be very close to the indicator in
order to determine exactly where the needle is. Usually a multiplier must be used to obtain final
reading. This causes an otherwise simple procedure, such as interpretation of the indicators’ reading
to be time consuming and difficult.
The company would like to replace these analog meters with new solid state digital meters capable
of operating with the transducers that are currently being used, and is looking for a way to store daily
peak readings for later evaluation. Also, future plans call for the linking of these indicators with an
existing control system so input and/or peak value may be read from a remote computer terminal if so
desired. The Apollo IMD Decade Current Meter with serial communication and totalizer options is
suited perfectly for this application.
The ±2 mA range is selected to accept the 0 to 1 mA transducer signal. This signal can easily be
scaled to provide virtually any readout with several selectable decimal point positions, and it can be
changed in minutes for different applications. The large bright LED display is quickly and easily read.
The serial communications option is programmed to match the baud rate of the existing system, and
input or peak readings may be viewed and/or reset by either the front panel or from a remote terminal.
ORDERING INFORMATION
MODEL NO
DESCRIPTION
+18 VDC
EXCITATION
TOTALIZER/
LINEARIZER/
PEAK/VALLEY
TARE/E2CON
DUAL
ALARMS
SERIAL
OUTPUT
4 to 20 mA
ANALOG
OUTPUT
0 to 10 VDC
ANALOG
OUTPUT
PART NUMBERS FOR AVAILABLE
SUPPLY VOLTAGES
*
10 to 30 VDC
115/230 VAC
NO
NO
YES
NO
YES
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
IMD2
Intelligent
NO
NO
Meter For
YES
NO
Decade
YES
NO
Current
YES
YES
Inputs
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
For more information on Pricing, Enclosures & Panel Mount Kits refer
IMD1
Intelligent
Meter For
Decade
Voltage
Inputs
NO
NO
NO
NO
YES
NO
NO
NO
NO
YES
YES
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
NO
YES
NO
NO
NO
NO
YES
YES
NO
NO
NO
YES
YES
YES
YES
to the RLC Catalog or
NO
NO
NO
NO
NO
NO
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
YES
NO
contact your
NO
IMD10030
NO
IMD10130
NO
IMD10132
NO
IMD13130
NO
IMD13131
NO
IMD13132
NO
IMD13133
NO
IMD13137
YES
IMD13139
NO
IMD20030
NO
IMD20130
NO
IMD20132
NO
IMD23130
NO
IMD23131
NO
IMD23132
NO
IMD23133
NO
IMD23137
YES
IMD23139
local RLC distributor.
IMD10060
IMD10160
IMD10162
IMD13160
IMD13161
IMD13162
IMD13163
IMD13167
IMD13169
IMD20060
IMD20160
IMD20162
IMD23160
IMD23161
IMD23162
IMD23163
IMD23167
IMD23169
*
Note: The 10 to 30 VDC units have not been specified for EMC.
4
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