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Multi Functional Current Controlled Switch Module
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PKK-312 – Multifunctional current controlled switch modules

Brand:

$0.00 Excl. GST

Power Supply Option*

Total: $0.00

All prices are in NZ$, and GST exclusive and are subject to change without notice.

Product Details

UNICONT PKK-312 series is a 4 – 20 mA current controlled limit switch featuring galvanic isolation also available as an intrinsically safe unit. The input 4 – 20 mA signals can be transferred from passive or active outputs of 2- or 4-wire transmitters. The value of the input signal will be compared in the unit with the set (taught) value and the state of the galvanically isolated relay changes in accordance with the comparison mode programmed.

The double throw output relay can be programmed for the following functions:

  • Limit switch (high or low fail safe)
  • ON-OFF control with selectable switching difference
  • Monitoring of discontinuity or short-circuit of the cable

Window comparison operation mode with energised or de-energised relay state

The UNICONT PKK-312-8 Ex is a special version, designed to operate with NIVELCO’s Ex rated, DC powered 2-wire NIVOSWITCH vibrating fork level switches, as an intrinsically safe power supply and amplifier unit. Without doing any programming the galvanic isolated limit switch is able to perform relay switching signal based on the monitoring of the vibrating fork’s output current changes between the freely vibrating and the immersed states.

PKK-312 Features 

  • 4~20mA input
  • Relay output
  • Rail mountable
  • Intrinsically safe Associated Apparatus
  • Galvanic isolated limit switch
  • Power supply for transmitters
  • Cable state monitoring

Technical Specs

TypePKK-312-1PKK-312-4
Power supply (U)230 V AC ±10%
50 – 60 Hz		24 V AC ±10%,
50 – 60 Hz,
24 V DC ±15% 
Power consumption< 2.7 VA< 2.5 W
Switching levels2 values in the range of 1 – 22 mA
Ex marking–
Intrinsically safe data–
Output load capabilityU0 = 30 V; IMAX = 70 mA;
UOUT min = 16 V		U0=24 V;
IMAX = 80 mA;
UOUT min = 23 V
Electrical protectionClass IIClass III
Ambient temperature-25 °C … +55 °C

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