Omega manual CDTX-90-2 Terminal Connections, Terminals 5-10 Relay Outputs

CDTX-90-2 Terminal Connections

Terminals 3 and 4: Loop Power 12-24 VDC ±10% system power and current loop output.

Max. loop impedance: 50 Ω max. @ 12 V 325 Ω max. @ 18 V 600 Ω max. @ 24 V

4 System Pwr

Loop -

System Pwr

3 Loop +

AUX

2 Power -

AUX

1 Power +

Terminals 1-2: Auxiliary power Provides DC power to sensor. Required for all CDTX-90 systems.

Terminals 11-14: Sensor input 11 is conductivity input

12is temperature input

13is the isolated signal ground

14is the sensor earth ground

10 Relay(NO) 2

9Relay 2 (COM)

8	Relay 2	14	Sensr Gnd
	(NC)		(SHIELD)
7	Relay 1	13	Iso. Gnd
	(NO)		(BLACK)
6	Relay 1	12	Temp. IN
	(COM)		(WHITE)
5	Relay 1	11	Signal IN
	(NC)		(RED)

Terminals 5-10: Relay Outputs

•Two SPDT mechanical relays, programmable as:

•High or Low setpoint with adjustable hysteresis.

•proportional Pulse (400 pulses per minute maximum).

•May be disabled (Off) if not used.

CDTX-90-2 System Power/Loop Connections
Stand-alone application, no current loop used				Connection to a PLC with built-in power supply
Transmitter							PLC
				Transmitter
		Power Supply					Terminals
						-	Power Supply
		DC 12 - 24 V
Terminals							Ground
					Terminals	+	Power
Sys. Pwr.	4	-	Power				Supply
				Sys. Pwr.	4	-	Loop Input
Loop -			Supply
							4-20 mA
Sys. Pwr.	3	+	Power	Loop -
				Sys. Pwr.	3	+	Loop Input
Loop +			Supply
							4-20 mA
AUX	2			Loop +
				AUX
Power -					2	Internal PLC
AUX	1			Power -
				AUX		Connection
Power +					1
				Power +

Connection to a PLC/Recorder, separate supply					Example: Two transmitters connected to PLC/Recorder
								with separate power supply
					Transmitter 1
	Transmitter		DC 12 - 24 V
						Sys. Pwr.	4		DC 12 - 24 V
			-	Power		Loop -
				Supply		Sys. Pwr.	3		-	Power
			+	Power		Loop +				Supply
				Supply		AUX	2		+	SupplyPower
	Terminals					Power -
			PLC or Recorder			AUX	1
						Power +
			-
Sys. Pwr.		4		Loop Input					PLC or Recorder
Loop -				4-20 mA in		Transmitter 2
									-	Channel 1
			+	Loop Input
Sys. Pwr.		3
Loop +				4-20 mA in		Sys. Pwr.	4			4-20 mA in
						Loop -			+	Channel 1
AUX		2
						Sys. Pwr.	3			4-20 mA in
Power -
						Loop +			-
AUX		1								Channel 2
						AUX
Power +							2			4-20 mA in
						Power -			+	Channel 2
						AUX	1			4-20 mA in
AUX required for all CDTX-90 systems.						Power +

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