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Logic Control Unit

Logic Control Unit
  List Price (ex VAT): £308.69  
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  Order Code: KFD2DWBEX1D  

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Product details

Intrinsic safety & signal conditioning

Overspeed/underspeed monitor - 20mm

This isolated barrier is used for intrinsic safety applications. It monitors for an overspeed or underspeed condition of a digital signal (NAMUR sensor/mechanical contact) from a hazardous area 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 start-up 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.
Input/Output:Digital input
No. of Channels:1
 Collective error message:Power rail
 Output I, II:Signal relay
 Input I:acc. to EN 60947-5-6 (NAMUR)
  Pulse duration:>50μs
  Input frequency:0.001 to 5000Hz
  Lead monitoring:Breakage 1 ≤0.15mA
  Short circuit current:1 >6.5mA
 Input II:Start-up override: 1-1000s, adjustable in steps of 1s
  Active passive:1 >4mA (for min. 100ms) 1 <1.5mA
  Open circuit voltage:18V
  Short circuit current: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 galvanic isolation
  • Single-channel isolated barrier
  • 24V d.c. supply (Power Rail)
  • Dry contact or NAMUR inputs
  • Input frequency 1mHz to 5kHz
  • 2 relay contact outputs
  • Start-up override
  • Configurable by keypad
  • Line fault detection (LFD)
  • Up to SIL2 acc. to IEC 61508/IEC 61511
  • DIN rail/power rail solutions
  • Removable terminals reduce maintenance time
  • Fault detection and local indication

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