Transmitter for Numerical Counter Signals
Type FFD 1680
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Du line
®
Fieldbus
Installationbus
Transmitter with counter input
4-digit totalizing up-counter
Overflow indication
Reset input
D-housing
Plug-in type module
LED-indication for supply
AC or DC power supply
Product Description
Dupline
®
transmitters with
pulse input and 4-digit totali-
zing up-counter. Reset and
disable inputs. Detection, up-
counting and transmission of
low-frequency events for
readout, control, logging etc.
Ordering Key
Type: Dupline
®
Input signal
Supply
FFD 1680 024
Type Selection
Supply
Ordering no.
4-digit
counter
FFD 1680 024
FFD 1680 120
FFD 1680 220
24 VAC
120 VAC
220 VAC
10 to 30 VDC*
Code module
*
All AC types may be supplied with 10 to 30 VDC at pins 3 & 9
FMK A-B to O-P
Input Specifications
Count input
Open loop voltage
Short-circuit current
Counting range
Counting direction
Input frequency
Contact resistance
Dielectric voltage
Input - Dupline
®
Reset input
Open loop voltage
Short-circuit current
Operating time for signal "1"
Operating time for signal "0"
Contract resistance
Cable length
Dielectric voltage
Input - Dupline
®
1 contact or NPN transistor
8 VDC
2 mA
0 to 9999
Up
≤
25 Hz
≤
100
Ω
None
1 contact or NPN transistor
8 VDC
2 mA
≤
1 pulse train + 20 ms
≤
1 pulse train + 20 ms
≤
100
Ω
≤
3m
None
Transmission disable input
Open loop voltage
Short-circuit current
Operating time for signal "1"
Operating time for signal "0"
Contact resistance
Cable length
Dielectric voltage
Input - Dupline
®
1 contact or NPN transistor
8 VDC
2 mA
≤
1 pulse train + 10 ms
≤
1 pulse train + 10 ms
≤
100
Ω
≤
3m
None
Specifications are subject to change without notice (28.09.99)
Dupline
®
is a registered trademark. A product of the CARLO GAVAZZI Group
1
FFD 1680
Du line
®
Fieldbus
Installationbus
Supply Specifications
Power supply AC types
Rated operational voltage
through pins A1 & A2 220
120
024
Frequency
Voltage interruption
Rated operational power
Rated operational
withstand voltage
220
120
024
Dielectric voltage
Supply - Dupline
®
Supply - Count input
Supply - Reset/Disable input
Alternative DC supply
Supply voltage (V
DD
in)
through pins 3 & 9
Ripple
Reverse polarity protection
Rated operational current
Inrush current
Rated operational withstand
voltage
Dielectric voltage
Supply - Dupline
®
Supply - Count input
Supply - Reset/Disable input
Overvoltage cat. III (IEC 60664)
230 VAC +6%, -15% (IEC 60038)
120 VAC ± 10% (IEC 60038)
24 VAC ± 10%
45 to 65 Hz
≤
40 ms
Typ. 2.5 VA
4 kV
2.5 kV
800 V
≥
2 kVAC (rms)
≥
2 kVAC (rms)
≥
2 kVAC (rms)
Overvoltage cat. III (IEC 60664)
10 to 30 VDC (ripple included)
≤
3V
Yes
≤
20 mA
≤
1A
800 V
None
None
None
General Specifications
Power ON delay
Indication for
Supply ON
Environment
Degree of protection
Pollution degree
Operating temperature
Storage temperature
Humidity
(non-condensing)
Mechanical resistance
Shock
Vibration
Dimensions
Material
(see "Technical Information")
Weight
Approvals
Undefined,
≤
1 s
LED, green
IP 20 B
3 (IEC 60664)
-20° to +50°C (-4° to +122°F)
-50° to +85°C (-58° to +185°F)
20 to 80%
15 G (11 ms)
2 G (6 to 55 Hz)
D-Housing
200 g
CSA
Mode of Operation
Transmitters with 4-digit
pulse counting function. The
module features reset and
transmission disable inputs.
The accumulated counting
value is transmitted in BCD
representation on the Dupline.
This implies that every digit
uses 4 channels. The-digit-
to-channel allocation is as
follows (example with FFD
1680 and FMK C-D plugged
in):
10
0
on highest 4 selected
channels (e.g. D5-8).
10
1
on lower 4 channels of
higher group (e.g. D1-4).
10
2
on higher 4 channels of
lower group (e.g. C5-8).
10
3
on lowest 4 selected chan-
nels (e.g. C1-4).
For every digit the most sig-
nificant bit of the BCD equiva-
lent influences the lowest of
the 4 allocated channels.
Activation of the reset func-
tion (pin 3 connected to pin 1)
always resets the internal
counter to 0, irrespective of
the disable and counting in-
puts.
When the transmission dis-
able function is activated (pin
3 connected to pin 5), the
transmitter does not transmit
its value via the Dupline
®
whereas the internal counter
can still operate.
A Dupline
®
system can have
several FFD 1x80s coded to
the same channel groups. In
this case the counting values
may only be emitted from
one transmitter at a time, the
other transmitters must be
disabled in the meantime. This
feature is best obtained by
using Dupline
®
receivers with
demultiplex output type D
1230 5111 connected to the
transmission disable inputs.
FK3C 7640 and FL3C 7640
or D 6369 6475 can be used
for display of FFD 1680 va-
lues. FK3C 7760 and FL3C
7760 can be used for display
of FFD 1780 values.
Overflow:
When the counter
reaches 9999 (999999), the
transmitter activates all coded
channels, thereby causing
Dupline
®
displays to become
dark.
Note:
If DC-supplied FFD ....
transmitters are used, the
length of the supply bus must
not exceed 3 m in order to
avoid disturbances unbalan-
cing the Dupline
®
.
Note:
Transmitters for nu-
merical signals must not be
used in systems where chan-
nel generators with 2 or 3 se-
quences are installed.
2
Specifications are subject to change without notice (28.09.99)
Dupline
®
is a registered trademark. A product of the CARLO GAVAZZI Group
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