WILKERSON INSTRUMENT CO., INC.

MM1700 Frequency Input Plug-In Single Alarm
Mighty Module

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MM1700

MM1700
Frequency Input
Plug-In
Single Alarm
Mighty Module

$300.00

The following information must be entered to complete your order:
See "Specifications" below for Input range limits.

Power:

Input:
Zero Scale
Full Scale
Units
  Pull-up Resistor
Alarm: Alarm Action
  Alarm Logic

Quantity:

 

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Specifications
 
  • Features
  • Description
  • Specifications
  • Dimensions
  • Connections
  • Provides a DPDT Relay Contact Closure at a Preset Frequency Input
  • Standard Fail-Safe Operation
  • Red and Green LED Alarm Status Indicators
  • Adjustable Deadband
  • Frequency Limit 60 kHz
  • 50 mV to 100 V Peak Input Sensitivity
  • Adjustable Threshold for Low Level Noise Rejection
  • Unlimited Choice of Input / Output Ranges ( Within specified range limits )
  • Input Pullup Resistor Available
  • Choice of Power Options
  • 10 Year Warranty

The MM1700 monitors a frequency input signal and trips a DPDT, 5 A relay when the input reaches the desired frequency. Alarms may be High acting (alarm trips on an increasing input frequency) or Low acting (alarm trips on an decreasing input frequency). Normal operation has the relay energized for the non-alarm condition and de-energized 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.

A 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.

The wide range of input sensitivity allows the MM1700 to be driven from low level magnetic pickups as well as logic level signals. A threshold adjustment sets the minimum input amplitude the module will process. This allows the user to trade off sensitivity versus noise rejection. An optional pullup resistor (Option P) permits use with contact-closure or open-collector inputs.

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

TYPICAL APPLICATIONS Flow rate, motor speed, conveyor speed, power line frequency on portable generators

INPUT RANGE
select any range from 0 to 10 Hz min to 0 to 60 kHz max

INPUT SENSITIVITY
any voltage from 50 mV to 100 V peak

INPUT IMPEDANCE
100 kilohms

OPTION P
Pullup resistor to + input 10 kilohms to +12 VDC

SETPOINT
0 to 100% of span

DEADBAND
0.5% to 100% of span

ACCURACY
±0.1% of span

RELAY CONTACTS (DPDT)
Resistive Load 5 A max, 150 W max,
220 VAC max, 30 VDC max
Inductive Load (Power Factor > 0.4) 2.5 A 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

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/°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)
12 VDC (limits 10-16 VDC)

Isolation, DC power supply to input common: 10 megohms

Mighty Module Dimension Drawing

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 or DC +
No Connection
Power AC L2 or DC -
Input Signal
Input Common
Relay Set 1 NO
Relay Set 1 C
Relay Set 1 NC
Relay Set 2 NO
Relay Set 2 C
Relay Set 2 NC
Specifications    Manual

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