• Provides a DPDT Relay Contact Closure at a Preset DC Current Input
• Standard Fail-Safe Operation
• Red and Green LED Alarm Status Indicators
• Adjustable Deadband
• 24 VDC Power Supply for Two-Wire Transmitters
• 4/20 mA Input Range
• 10 Year Warranty

The MM1005 monitors a DC current input and trips a dpdt, 5 A relay when the input exceeds the desired level. Normal operation has the relay energized for the non-alarm condition and it de-energizes for an alarm condition. This provides a fail-safe alarm condition for loss of power to the module. The alarm has a set of red/ green LEDs to indicate alarm status.

The module contains a 24 VDC transmitter power supply specifically designed for use with two-wire and other 24 VDC powered transmitters.

The deadband adjustment allows a deadband of 0.5% to 100% of span to be set into the module. The deadband is symmetrical about the setpoint.

All Wilkerson products are designed with RFI filters and lightning protection to reduce susceptibility to electrical noise and damage by lightning.

TYPICAL APPLICATIONS
HI/LO pressure alarm, level/position control, temperature alarm, etc.

INPUT RANGE 4/20 mA INPUT IMPEDANCE 61.9 ohms TRANSMITTER POWER SUPPLY 24 VDC regulated, 30 mA max SETPOINT 0 to 100% of span DEADBAND 0.5% to 100% of span RELAY CONTACTS (dpdt) Resistive Load 5 A max, 150 W max, Inductive Load (Power Factor > 0.4) 2.5 max, 75 W max, 220 VAC max, 30 VDC max

TRANSISTOR OUTPUT (Option V) Relay driver (12 V coil, > 220 ohms) or open-collector outputs sink 100 mA, 30 V supply max RESPONSE TIME 20 ms typical ACCURACY ±0.1% of span or 10 μV whichever is greater COMMON MODE REJECTION 120 dB, DC to 60 Hz OPERATING TEMPERATURE 14°F to 140°F/-10°C to 60°C TEMPERATURE STABILITY ±(0.02% of span + 30 μV)/°C max POWER 115 VAC ±10%, 50 or 60 Hz (2.5 W max) 230 VAC ±10%, 50 or 60 Hz (2.5 W max)

PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 PIN 7 PIN 8 PIN 9 PIN 10 PIN 11

Power AC L1 + 24 VDC Power AC L2 Input + Input - Relay Set 1 NO Relay Set 1 C Relay Set 1 NC Relay Set 2 NO Relay Set 2 C Relay Set 2 NC