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Power	Input Supply Voltage	24 VDC (18-31.2 V)
	Power Consumption	10 W Typical
	Loop Power	Configuration dependable
	Power Connectors	Screw terminals
	Cable Cross-Section	2.5 mm²
	Max. Torque	0.4-0.5 Nm
RBUS Interface	RBUS Connectors	2x9 pin male D-Sub, RS485, galvanic isolated
Input/Output	Number of I/O Channels	32
Digital Input (DI)	Loop Voltage	Input supply voltage
	Input Loop Current	Max. 4 mA @ 24 VDC loop voltage
	Channel "Off" Current	<0.5 mA
	Channel "On" Current	>3 mA
	Max. Input Voltage	Input supply voltage
	Max. Input Signal Frequency	10 ms pulse
Digital Output (DO)	Loop Driver Trip Current	Approx. 1.4 A @ 20˚C (reset by command)
	Loop Driver "Off" Leakage	Max. 0.1 mA @ 24 VDC input supply voltage
	Loop Monitoring Current	Max. 2 mA @ 24 VDC input supply voltage
Analog Input (AI)	Voltage Input Range	0-4 V, 0-10 V
	Input Resistor to Ground	3 MΩ
	Current Input Range	0-20 mA
	Automatic Protection	26 mA
	Input Resistor to Ground	150 Ω ±1%
	Measurement Accuracy	±0.15% of full scale
PT100 Interface	Temperature Range	-200 to 600˚C
	Resolution	±0.5˚C
	Accuracy	±0.4% of full scale
	Temperature Drift	±50 ppm/˚C
	Max. Wire Resistance	25 Ω/wire
	Response Time	1000 ms
Physical	Dimensions (H x W x D)	355x158x87 mm
	Weight	1.35 kg
	Mounting	DIN rail vertical

RPM420S is a multipurpose I/O module for use in Alarm monitoring and Integrated Control Systems. RPM420S is designed for 32 field input channels in single topologies. Its interface towards the host control computer (RCU) is provided by redundant I/O bus.

RPM420S Functions

32 software configurable multipurpose solid-state channels.

RPM420S Analog and Digital Input and Output (AI, AO, DI and DO).

2 or 3 wire Resistance Temperature Detector (RTD).

2 channels can be configured as pulse/frequency/encoder input.

RPM420S Short-circuit protected I/O loop power output.

Dual Remote I/O process BUS interface for redundant communication with host computer(s).

Communication ports galvanically insulated from other module circuitry.

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