Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm

Mighty Module MM1220 Thermocouple Input Dual Limit Alarm


MM1220 Thermocouple Input Dual Limit Alarm

Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,AlarmDescription
The MM1220 monitors any thermocouple 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 alarm state), select Option R. 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.

Cold junction compensation is provided by a solid state temperature sensor embedded in the thermocouple terminal strip.  The module includes filtering and conditioning to reduce susceptibility to transients and noisy operations.

Upscale burnout protection is provided as standard. In the event the thermocouple opens, the module behaves as though the input goes offscale high. Option B provides downscale burnout protection (module behaves as though the input goes low).

Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm Download MM1220 Brochure

Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm Download MM1220 Manual

Features

Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm
Provides Relay Contact Closures at Preset Thermocouple Input
Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm
Cold Junction Compensated
Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm
Fail-safe, Latching, and Adjustable Deadband Available
Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm
Red and Green LED Alarm Status Indicators
Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm
4 mV Minimum Input Span
Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm
Unlimited* Choice of Input Ranges
Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm
Upscale Burnout Protection (Downscale Available)
Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm
Choice of Power Options
Mighty,Module,MM1220,Thermocouple,Input,Dual,Limit,Alarm
10 + 5 Year Warranty

Typical Applications

Heater/cooler control, HI/LO temperature alarm.

Mounting

The module is designed to plug into a standard 11-pin relay socket (part number MP011). The sockets are molded plastic suitable for mounting on a flat surface. The MP011 will mount in a 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 (MP011) is available for 35mm symmetrical Din rail.

Specifications

INPUT RANGE
 select any type TC
 (min span 4 mV)

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
20 ms typical
WR < = 200 ms
  (range dependent)

ACCURACY
0.01% of span

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
 14F to 140F
-10C to  60C

TEMPERATURE STABILITY
(0.02% of span + 30 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

 

* Within specified range limits


CONNECTIONS
Power, AC L1 or DC +
Power, AC L2 or DC -
T/C + Input
T/C - Input
Relay 1 NO
Relay 1 C
Relay 1 NC
Relay 2 NO
Relay 2 C
Relay 2 NC
PINS
1
3
T/C Terminal +
T/C Terminal -
6
7
8
9
10
11