Alarm Monitoring
monitoring
m3000 SerieS
Analog Alarm Annunciator
Description
The M3000 Analog Alarm Annunciator has 24 inputs that can
be configured individually for dry contact (NO or NC) inputs or
analog inputs. Analog inputs can read measurements through
4-20 mA, 0-10 Vdc or 0-24 Vdc transmitters. Up to 48 alarms
can be configured with individual reference to any of the 24
inputs. An alarm is activated and indicated when the input
value exceeds a preset critical low or high level. The alarm can
be related to any of the 24 LEDs and any of the 14 outputs.
Several alarms may activate the same LED and/or output. The
M3000 has a common alarm output, a siren output, as well as
dedicated inputs for remote reset and blocking.
Configure the unit from a PC through the built-in RS232
interface or the front panel. It also comes equipped with
an RS485 interface supporting MODBUS-RTU and with
configuration software. It features a spreadsheet-like graphical
interface enabling flexible configuration of all the parameters
in the unit. The M3000 also offers configuration of average
deviations alarms. This feature is used in monitoring of the
exhaust gas temperatures of diesel or gas engines. The
average temperature from a number of cylinders is calculated.
If the temperature value of one of the cylinders deviates from
the average of the remaining cylinders by more than a preset
± offset, a deviation alarm will be activated.
A
Simplified Circuit Diagram
1
IN 1
1
12
IN 2
13
IN 3
14
GND
INPUT
GROUP 1
101
OPEN
COLLECTOR
OUTPUTS
1
14
15
AL. OUT
1
16
SIREN
1
81
IN 1
82
IN 2
83
IN 3
84
GND
120
121
122
INPUT
GROUP 8
M3000
RS232
+
–
(Analog Alarm
Annunciator)
RS485
Accessories
B
130
A
131
COM
132
24 V
DIM
Features & Benefits
feaTureS
24 inputs
48 alarms
Programmable
10-character LCD text
24 LEDs with
indication of new and
acknowledged alarms.
14 open
collector outputs
RS485 interface
RS232 link
M1500 PT100 6-way Transmitter
Six current transducers in one box for use with
DIN60751 3-wire PT100 temperature sensors. The
output signals are 4-20 mA current, which can be
easily fed into the M3000. Each sensor input can
be configured for 3 different temperature ranges.
BenefiTS
One unit for both, digital and analog sensors
Individual reference to any of the 24 inputs allows
easy configuration of group and individual alarms
Each alarm is indicated as clear text
First incoming alarm can be identified easily
Provide ON/OFF control and simple connection to
remote displays
For field-bus communication with PLC or HMI
Allows easy programming with PC-based
software
Specifications
Voltage Supply
Consumption
Sensor Inputs
Input Types
Alarms
Alarm Delays
Outputs
24 Vdc ±30%
Max. 400 mA
24
20 mA, 10 Vdc and 24 Vdc
48
300 msec. to 10 days
14 on/off open collector outputs, each controlled
by one or more alarms. Max. 150 mA per output
General Alarm Output
Max. 150 mA
Siren Control
Max. 150 mA
LEDs
24
LCD Display
2 x 16 characters with background light
Communication
RS485 interface
Protocol
MODBUS-RTU
Operating Temp.
–20°C to +70°C
95% RH at 20°C
Humidity
4 g RMS according to IEC 60068-2-64
Vibration Test
EMC
CE according to EN50081-1, EN50082-1, EN50081-2,
EN50082-2 and EN61000-2-6
Approvals
Certified by major marine classification societies
50 hours before final test
Burn-in
Weight
0.8 kg
H
144 mm (5.7”);
W
144 mm (5.7”);
D
70 mm (2.7”)
Dimensions
Panel Cut-out
H
138 mm (5.4”);
W
138 mm (5.4”)
Protection Degree at Front
IP54
© May 2012 Littelfuse Protection Relays & Controls
Ordering Information
OrderinG numBer
cOnTrOl POWer
M3000.0010
acceSSOrieS
24 Vdc
requiremenT
M1500
www.littelfuse.com/m3000
24 Vdc
Integrated technical exchanges
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