© May 2012 Littelfuse Protection Relays & Controls
Alarm Monitoring
Monitoring
M3000 SERIES
Analog Alarm Annunciator
www.littelfuse.com/m3000
ORDERING NUMBER CONTROL POWER
M3000.0010 24 Vdc
ACCESSORIES REQUIREMENT
M1500 24 Vdc
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.
Ordering Information
Simplified Circuit Diagram
FEATURES BENEFITS
24 inputs One unit for both, digital and analog sensors
48 alarms
Individual reference to any of the 24 inputs allows
easy configuration of group and individual alarms
Programmable
10-character LCD text
Each alarm is indicated as clear text
24 LEDs with
indication of new and
acknowledged alarms.
First incoming alarm can be identified easily
14 open
collector outputs
Provide ON/OFF control and simple connection to
remote displays
RS485 interface For field-bus communication with PLC or HMI
RS232 link
Allows easy programming with PC-based
software
Features & Benefits
Specifications
Voltage Supply
24 Vdc ± 30%
Consumption Max. 400 mA
Sensor Inputs 24
Input Types 20 mA, 10 Vdc and 24 Vdc
Alarms 48
Alarm Delays 300 msec. to 10 days
Outputs 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
Humidity 95% RH at 20°C
Vibration Test 4 g RMS according to IEC 60068-2-64
EMC CE according to EN50081-1, EN50082-1, EN50081-2,
EN50082-2 and EN61000-2-6
Approvals Certified by major marine classification societies
Burn-in 50 hours before final test
Weight 0.8 kg
Dimensions H 144 mm (5.7”); W 144 mm (5.7”); D 70 mm (2.7”)
Panel Cut-out H 138 mm (5.4”); W 138 mm (5.4”)
Protection Degree at Front IP54
14
12
13
11
INPUT
GROUP 1
IN 1
IN 2
IN 3
GND
84
82
83
81
INPUT
GROUP 8
IN 1
IN 2
IN 3
GND
101
114
120
11 5
11 6
121
122
130
131
132
–
+
M3000
(Analog Alarm
Annunciator)
24 V
DIM
AL. OUT
SIREN
B
A
COM
RS485
RS232
OPEN
COLLECTOR
OUTPUTS
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.
Accessories
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