COMADAN

RM34 temperature relay

4 temperature ranges -50...+200ºC for PT100 sensor
Adjustable time delay
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Product description

RM34 relay is used for temperature metering. Features a Pt100 sensor (DIN43760) with 2 or 3 wires. You can select between 4 metering ranges. Relay activation, inversion and delay are adjusted by DIP switches in the bottom of the relay. Relay will release in the occasion of short-circuit or cable breakage.

Technical data

Supply	12 – 50 V DC or 230 V AC
Isolation voltage	Supply-input-output 3,75 kV
Power consumption	3 VA
Temperature range	-20 °C...+60 °C
Temp. coefficient	<0,01 %/ºC
Indications	Green LED steady: supply ON and input OK Green LED flashing: input OK. input signal ouside the range or cable defect Red LED: Relay active
DIP-switches	S1-S2:relay inversion and reaction delay, see table and functional diagram S3-S4:Selection of metering range, see table
Potentiometers	Pot 1setpoint , 0-100% of the range Pot 2reaction delay, 0-10 seconds
Hysteresis	1 °C
Sensor connections	6-7 Pt100 5 cable compensation
Max. load, relay	relay 1 (1-3-4) 8 A – 250 V AC relay 2 (11-8-9) 5 A – 250 V AC
Weight	190 g
EMC	EN50081-1, EN50082-2, EN60730, CE


SW 1	SW 2	ex. no.	Function
Off	Off	1	Relay activates, when setpoint is exceeded, delay on release.
On	Off	2	Relay releases, when setpoint is exceeded, delay on activate.
Off	On	3	Delay on activate, when setpoint is exceeded.
On	On	4	Delay on release, when setpoint is exceeded.
SW 3	SW 4	Mittausalue
Off	Off	-50 °C...+50 °C
On	Off	0 °C...100 °C
Off	On	50 °C...150 °C
On	On	100 °C...200 °C

Measurements

Dimensions.

Connection diagram

Order numbers

Order number	Description	Supply
RM3421.230	Temperature relay	230 V AC
RM3424.012	Temperature relay	12-50 V DC

Articles	Approvals	Depth	Height	Hysteresis Temperature	IP Class	Materials Cover	Mounting	Power Supply DC max	Power Supply DC min	Temperature resistance housing from	Temperature resistance housing to	Weight	Width
RM3424.012 TEMP.RELÄ PT100,-50-200°C,24DC	CE, EMC	74 mm	76 mm	1,5	IP20	Noryl	DIN rail	50 V	12 V	-20 °C	60 °C	190 g	38 mm
RM3421.230 LT relay PT100, -50…+200 °C, 230 V AC

Approvals	CE, EMC
Depth	74 mm
Height	76 mm
Hysteresis Temperature	1,5
IP Class	IP20
Materials Cover	Noryl
Mounting	DIN rail
Power Supply DC max	50 V
Power Supply DC min	12 V
Temperature resistance housing from	-20 °C
Temperature resistance housing to	60 °C
Weight	190 g
Width	38 mm

Approvals

CE, EMC

Depth

74 mm

Height

76 mm

Hysteresis Temperature

1,5

IP Class

IP20

Materials Cover

Noryl