Product
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A range of three din rail mounted fully enclosed 0-10VDC BMS modules providing a volt free digital output from a 0-10VDC BMS signal. These modules are an alternative to standard BMS low coil consumption “SRMV” relays which have a coil consumption of <20mA. On occasions with some BMS systems there is insufficient power in the 0-10VDC signals even to drive a low coil consumption “SRMV” relay. The Foxtam Controls modules have a consumption of <0.5mA with regards to the 0-10VDC signal, the power to drive the output relay is taken from a separate auxiliary supply of 24V AC/DC, the 0-10VDC input signal and the 24V auxiliary supply shares a common 0V point (see wiring diagram below), it should also be noted that the module is polarity sensitive. A red LED indicates the output relay is energised.
YR-1RM This module has a fixed non adjustable setpoint of 5VDC at which point the SPCO output relay will energise indicated by a red LED. The de-energisation point is a fixed hysteresis of 5% (0.25V), therefore 4.75VDC. At all times the 24V AC/DC auxiliary supply must be present for the module to operate.
YR-1RM-A This module has an adjustable switching point of between 2-10VDC, adjustment is via a potentiometer on the front of the module. On reaching the selected setpoint the SPCO output relay will energise indicated by a red LED. The de-energisation point is a fixed hysteresis of 5% of the setpoint selected. At all times the 24V AC/DC auxiliary supply must be present for the module to operate.
YR-1RM-S Exactly as the YR-1RM but with the addition of an OFF/AUTO/ON denoted selector switch on the module. Set to AUTO the module behaves as a YR-1RM. In the ON position the relay output will be forced on even if the DC input signal has not reached 5VDC. Set to OFF the output relay can be forced to de-energise even if the DC input signal is above 5VDC. At all times the 24V AC/DC auxiliary supply must be present for the module to operate.
YR-1RM-AS Exactly as the YR-1RM-A but with the addition of an OFF/AUTO/ON denoted selector switch on the module. Set to AUTO the module behaves as a YR-1RM-A. In the ON position the relay output will be forced on even if the 0-10VDC input signal has not reached the selected setpoint. Set to OFF the output relay can be forced to de-energise even if the 0-10VDC input signal is above the selected setpoint. At all times the 24V AC/DC auxiliary supply must be present for the module to operate.
Input Supply
Auxiliary Supply: 24V AC/DC
Supply Tolerance: +/-15%
Max Power Consumption: 26mA
BMS Input Signal
Signal input: 0-10VDC
Input impedance: 22K Ohms
Consumption: 0.5mA
Max Hysteresis: 5% fixed of the setpoint
Relay Output
Output contact: SPCO 8 Amps / 250V AC1
Operate time: 15mSec max
Release time: 8mSec max
Max switching voltage: 250VAC, 30VDC
Mechanical life: 30 Million op
General
Operating Temperature: -20°C to +65°C
Storage Temperature: -20°C to +65°C
Humidity: 95% Rel H max
Isolation Voltage I/P-O/P: 1500VDCfor 1 min
CE marked: Yes
Standards Applied:
EN60950-1
EN6100-6-3
EN61010-1
Housing material: Polycarbonate, Auto extinguishable to UL 94 V-0
RoHS Compliant: Yes
Type
YR-1RM 24V AC/DC
(FIXED Trip Level) (NO Manual Override)
YR-1RM-A 24V AC/DC
(ADJUSTABLE Trip Level) (NO Manual Override)
YR-1RM-S 24V AC/DC
(FIXED Trip Level) (YES Manual Override)
YR-1RM-AS 24V AC/DC
(ADJUSTABLE Trip Level) (YES Manual Override)
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