4-20mA OUT OF RANGE TRIP AMP RELAY

A monitoring relay designed to monitor the integrity of a 4-20mA signal rather than control a process. Applications include safeguarding a system against potentially faulty transmitters or transducers where the output could on fault rise above 20mA or fall below 4mA but not reaching zero. Available in either a din rail or 8 & 11 pin plug in housing with a SPCO output (SPNO in the din rail version). The output relay will be energized when the monitored signal is between 4 & 20mA. The output relay will de-energise after an adjustable time delay up to 60 seconds if the monitored signal should fall below 3.5mA or rise above 20.5mA. There is a fixed hysteresis of 0.5mA therefore if the monitored signal falls back within the 4-20mA band the output relay will re-energise. If the auxiliary supply to the relay is lost at any time the output relay if energised will de-energise immediately.

Supply & Measuring

Supply voltage: 24VAC, 110VAC, 230VAC

Supply tolerance: ±15%

Isolation: Via transformer

Power consumption: 3VA max

Hysteresis: Fixed 0.5mA

Repeat accuracy:
±2% at constant ambient
±5% across temperature range

Response time:
10mSec on make
Adjustable up to 60 Sec on break

Input range: 4-20mA non-adjustable

Max over current: x10 Continuous

Input impedance: 1 Ohm

Relay output

Output contacts:
SPCO 8Amps/250V AC1
(Din rail SPNO)

Max breaking capacity: 2000VA

Mechanical life: 30 Million ops

Electrical life: 200Kops at max rated load

General:

Operating temperature: -20°C to +65°C

Storage temperature: -20°C to +65°C

Max cable size: 4mm

CE marked: Yes

In accordance with:
EN61000-6-1: 2007
EN61000-6-3: 2007
EN61010-1: 2002

Housing material: Polycarbonate, Auto extinguishable to UL 94 V-0

TYPE

YRTP (Din rail)
8RTP (8 pin plug in)
11RTP (11 pin plug in)

COIL VOLTAGE

230VAC
110VAC
24VAC