Mighty,Module,MM1520,Strain,Gauge,Bridge,Input,Dual,Alarm

Mighty Module MM1520 Strain Gauge (Bridge) Input Dual Alarm


MM1520 Strain Gauge (Bridge) Input Dual Alarm

Mighty,Module,MM1520,Strain,Gauge,Bridge,Input,Dual,AlarmDescription

The MM1520 monitors the DC input signal from a strain gauge bridge 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. It also provides a well regulated excitation voltage for the strain gauge and a high quality differential preamplifier to condition the low level output from the bridge.

Mighty,Module,MM1520,Strain,Gauge,Bridge,Input,Dual,Alarm Download MM1520 Brochure

Mighty,Module,MM1520,Strain,Gauge,Bridge,Input,Dual,Alarm Download MM1520 Manual

Features

Mighty,Module,MM1520,Strain,Gauge,Bridge,Input,Dual,Alarm
Provides Relay Contact Closures at Preset Strain Gauge Bridge Input
Mighty,Module,MM1520,Strain,Gauge,Bridge,Input,Dual,Alarm
0.5 mV/V to 1 V/V Input Span
Mighty,Module,MM1520,Strain,Gauge,Bridge,Input,Dual,Alarm
Fail-safe, Latching, and Adjustable Deadband Available
Mighty,Module,MM1520,Strain,Gauge,Bridge,Input,Dual,Alarm
Red and Green LED Alarm Status Indicators
Mighty,Module,MM1520,Strain,Gauge,Bridge,Input,Dual,Alarm
Unlimited* Choice of Input Ranges
Mighty,Module,MM1520,Strain,Gauge,Bridge,Input,Dual,Alarm
Choice of Power Options
Mighty,Module,MM1520,Strain,Gauge,Bridge,Input,Dual,Alarm
10 + 5 Year Warranty

Typical Applications

Weight and pressure control, monitoring or 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 surface on 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 SPAN
0.5 mV/V to 1 V/V

EXCITATION
adjustable 4 V to 12 V
  40 mA max load

EXCITATION STABILITY
0.005%/C

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
<= 500 ms

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

** Due to pins available, only one set of contacts are available for each relay.  Specify NO (Normally Open) or NC (Normally Closed).


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