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Logic Control, Rotation Speed Monitor

Logic Control, Rotation Speed Monitor
  List Price (ex VAT): £199.74  
  Stock On Back Order  
  Order Code: KFD2DWB1D  
  Manufacturer Code: 188378  

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Product details

Intrinsic safety & signal conditioning

Overspeed/underspeed monitor

This signal conditioner monitors for an overspeed or underspeed condition of a digital signal (NAMUR sensor/mechanical contact) by comparing the input frequency to the user programmed reference frequency.

An overspeed or underspeed condition is signaled via the relay outputs. Line fault detection of the field circuit is indicated by a red LED, Power Rail and relay. The startup override feature sets relay outputs to default conditions programmed by the user for up to 1,000 seconds.

The unit is easily programmed by the use of a keypad located on the front of the unit.

A unique collective error messaging feature is available when used with the Power Rail system.

Technical specification
Supply voltage:20-30V d.c.
Power consumption:1.8W
No. of channels:1
Input/output:Digital input
 Output I, II:Signal relay
 Energized/de-energized delay:≤20ms/≤20ms
 Input I:Sensor
  Open circuit voltage:22V
  Short circuit voltage:40mA
  Input resistance:4.7kΩ
  Switching point/hysteresis:
  Logic 1:>2.5mA
  Logic 0:<1.9mA
  Pulse duration:>50μs
  Input frequency:0.001 to 12000Hz
  Lead monitoring:
  Breakage I:≤0.15mA
  Short-circuit I:>4mA
 Input II:Start-up override: 1-1000s,
adjustable in steps of 1s
  Open circuit voltage:18V
  Short circuit voltage:5mA
Ambient temperature:-20 to +60°C
Protection rating:IP20
Mounting:35mm DIN rail or panel mount
Dimensions:w40 x h119 x d115mm

  • 3 port isolation
  • Single-channel signal conditioner
  • 24V d.c. supply (power rail)
  • Dry contact or NAMUR inputs
  • Input frequency 1mHz to 12kHz
  • 2 relay contact outputs
  • Start-up override
  • Configurable by keypad
  • Fault relay contact output
  • Line fault detection (LFD)
  • Up to SIL2 acc. to IEC 61508/IEC 61511
  • Limit detection with dual form C alarm contacts
  • Removable terminals reduce maintenance time
  • Fault detection and alarming

  • PLEASE NOTE: This device is not suitable for use in hazardous areas

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