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MM1620
AC INPUT
DUAL LIMIT ALARM

FEATURES
bulletProvides Relay Contact Closures at Preset AC Input
bulletFail-safe, Latching, and Adjustable Deadband Available
bulletRed and Green LED Alarm Status Indicators
bullet50 mV or 1 mA Minimum Input Span
bulletUnlimited* Choice of Input Ranges
bulletChoice of Power Options
bullet10 + 5 Year Warranty


DESCRIPTION

The MM1620 monitors an AC input signal and provides two sets of spdt, 5 A alarm relays with two independently adjustable setpoints.  Each setpoint has a set of red/green LEDs to indicate alarm status. When the input is between the setpoints, the relays are normally de-energized.  When the signal exceeds a particular setpoint, the relay becomes energized. To provide a fail-safe operation (loss of power resulting in an alarm state), select Option RR. The module can be supplied as a HI/HI, HI/LO, or LO/LO alarm (HI/LO supplied if not specified).

Standard deadband on both alarms is fixed at 0.5% of span. (Option A provides adjustable deadband of 0.5% to 100% of span.)  Option D, latching alarms, has no deadband control. Once the limit has been reached, the alarm latches and power to the module must be momentarily interrupted to reset the alarm.

The module includes filtering and conditioning to reduce susceptibility to transients and noisy operations.

TYPICAL APPLICATIONS

AC motor/current limit, AC power status or demand warning.

MOUNTING

The module is designed to plug into a standard 11-pin relay socket.  Part number MP011 is a molded plastic socket suitable for mounting on a flat or 2 3/4 inch wide PVC snap track (TRK48).  Use CLP-1 hold-down clip if needed.  A Killark HK Series explosion proof housing with dome and 11-pin socket is available (HKB-HK2D-11).  A DIN rail mounted socket (P/N DMP011) is available for 35mm symmetrical rail.


SPECIFICATIONS

INPUT RANGE
Voltage
  select any range  from 0 to 250 V max
    (min span 50 mV)

Current
  select any range from 0 to 1 A rms max**
  (min span 1 mA, internal shunt)

INPUT FREQUENCY
40 Hz to 1 kHz sine wave

INPUT IMPEDANCE
Voltage
  200 kilohms

Current
Input
1 mA
10 mA
20 mA
100 mA
1 A 		Shunt Value
100 OHM
10 OHM
5 OHM
1 OHM
0.1 OHM

SETPOINT
Each alarm
  0 to 100% of span

DEADBAND
Standard
  Fixed 0.5% of span

(Option A)
  0.5% to 100% of span

RESPONSE TIME
1 sec typical
  (range dependent)

ACCURACY
±0.05% of span

* Within specified range limits

COMMON MODE REJECTION
120 dB, DC to 60 Hz

RELAY CONTACTS
2 (spdt)
Resistive Load:
  5 A max, 150 W max
  220 VAC max, 30 VDC max

Inductive Load
  1/8 HP max at 120/240 VAC

TRANSISTOR OUTPUT (Option V)
Relay driver
  (12 V coil, > = 220 ohms)
or open-collector outputs
  sink 100 mA, 30 V supply max

LINEARITY (Option T)
±0.01% of span

OPERATING TEMPERATURE
 14°F to 140°F
-10°C to  60°C

TEMPERATURE STABILITY
±(0.02% of span + 30 µ V)/°C max

POWER
115 VAC 10%, 50/60 Hz
  (2.5 W max)
230 VAC 10%, 50/60 Hz
  (2.5 W max)

DC Power Option
  24 VDC (limits 21-32 VDC)
  Isolation, DC power supply to input common
    10 megohms


** For input values greater than 1 A rms select appropriate external shunt resistor and use with 0/500 mV rms input.


CONNECTIONS
 Power, AC L1 or DC +
Power, AC L2 or DC -
Input Signal
Input Common
Relay 1 NO
Relay 1 C
Relay 1 NC
Relay 2 NO
Relay 2 C
Relay 2 NC 		PINS
1
3
4
5
6
7
8
9
10
11