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Rotational Monitor

Rotational Monitor
  List Price (ex VAT): £336.61  
  Stock On Back Order  
  Order Code: KFA5DWBEX1D  
  Manufacturer Code: 231208  

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Product details

Intrinsic safety & signal conditioning

Overspeed/underspeed monitor - a.c. powered

This isolated barrier is used for intrinsic safety applications. It monitors for an overspeed or underspeed condition of a discrete 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 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.

Technical specification
Supply voltage:207-253V a.c.
Input/Output:Digital input
No. of Channels:1
Output I, II:Signal relay
Input I:
 Rated values:acc. to EN 60947-5-6 (NAMUR)
 Pulse duration:>50μs
 Input frequency:0.001 to 5000Hz
 Lead monitoring:
  Breakage I:≤0.15mA
  Short-circuit I:>6.5mA
Input II:Start-up override: 1-1000s,
adjustable in steps of 1s
 Active/passive:1 >4mA (for min. 100ms)/1 <1mA
 Open circuit voltage:18V
 Short circuit: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
  • 115V a.c. supply
  • 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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