Omega Vehicle Security OM-420 manual RPS-1 Control Wiring

USING THE RPS-1in the OM-420

Battery State of Charge
RPS-1 Power
				4-20mA							4-20mA transmitter
												to Port 1, Chan
					Xmtr
	Power
	Supply
	Output
	Power	5VDC Powered													mV Output
		Transducer
															Signal to
	Supply	(mV Output)
															Port 1, Chan A
	Output
Charger
Input	Com
+ Control	mon
_ Input
							1	2	3	4	5	6	7	8	9	10 11 12
												Port 1
RPS-1 Power Supplies		1	2	3	4	5	6	7	8	9	10 11 12
Controlled by one of the
standard OM-420 Digital
Outputs.		R1		R2	DO1		DO3		GND			GPDI Input
						DO2
							1	2 3		4	5	6	7	8	9	10 11	12

OM-320/420 Terminal	Port 2
Strip Adapter (TSA)

Figure 3: RPS-1 Control Wiring

The MODE switch (bottom or eighth switch) should be set for the desired operation, AUTO or ON. AUTO mode configures the supply to cycle ON and OFF per the state of the control signal coming from an external device (OM-320/420). When the CONTROL INPUT signal (connected on the four position terminal strip) is HIGH ( 5 VDC), either power supply configured in the AUTO MODE, turns ON. The ON position configures the power supply to be continually outputting the selected voltage to the OUTPUT terminals. The ON position is commonly used for set-up and troubleshooting of the sensor wiring.

The power supply outputs are internally current limited and protected from shorts. Current limiting occurs at approximately 250 mA. If loads approaching this current level are connected, the output voltage should be tested with a volt-meter to insure continued proper regulation. If the voltage is less than the OUTPUT VOLTAGE SWITCH programmed setting, the power supply is in current limit mode and the current load must be reduced. In many applications, this can be simply done by reprogramming the output voltage to the next lower output voltage (providing the sensor will accept the lower level). The A and B power supply OUTPUT terminals should NEVER be connected together.

The MAIN POWER SWITCH must be set in the 12VDC or the 24VDC position for the power supplies to function. For optimum battery life, set the MAIN POWER SWITCH at 12VDC if neither power supply

Omega Engineering Inc. 4 Stamford, CT