PT100 TEMPERATURE RELAY WITH BUILT IN “NO VOLT SAFE LATCH” PLUS MANUAL & REMOTE RESET

PT100 temperature relay, din rail mounted and DPCO output. The adjustable temperature sensing relay YWR2TR7 will monitor a PT100 sensing probe (preferably 3 wire, but 2 wire possible if terminals P2 & PC are linked together). The adjustable range is 0°C to 200°C the output relay will be energised when below the set level, indicated also by a red LED. When the sensed temperature exceeds the set level the relay will be de-energised accompanied by the red LED extinguishing, at which point the relay will be “latched off”. In this latched condition the YWR2TR7 will not reset on a failing temperature and will not be reset by removing and re-applying the auxiliary supply. In order to reset the YWR2TR7 the auxiliary supply must be on, the PT100 cold, then the front reset button can be operated or the remote reset input activated to re-energise the relay. In normal “no fault” operation the relay will energise on the connection of the auxiliary supply. Newly installed units may need to be initially reset on commissioning, transit shock can cause the relay to latch over.

Supply & Measuring:

Nominal supply tolerance: ±15%

Isolation AC versions: Via transformer

Isolation DC versions: None

PT100 sensor:
3 wire preferred
If 2 wire, terminals P2 & PC must be linked

Operating level: 0°C to 200°C adjustable

Operation delay on Thermistor operation: 0.5 sec

Relay output:

Output contacts: DPCO 8Amps/250V AC1

Mechanical life: 30 Million ops

Electrical life: 200K ops 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

YWR2TR7

COIL VOLTAGE

440VAC
415VAC
400VAC
380VAC
230VAC
110VAC
48VAC
24VAC
*48VDC
*24VDC
*12VDC

* No isolation on DC versions