Epson XDT manual Electrical Connections, Connecting Power, Sensor Cable

XDT User’s Manual

3.3.2 Electrical Connections

All connections are made via a 21 contact, pluggable screw terminal block referred to as P1.

Pluggable Block Terminals

Power Supply Module	0.5A 250V	1	AC LIVE
	4.3mH
	0.1uf
	275VAC	2	AC NEUTRAL		AC Power Input:
0.0047uf	0.0047uf	3	Not Connected		100 to 250VAC, 50/60Hz, 10VA
RFI filter board		4	AC GROUND
	Sensor	5	SIG-IN	white
					SENSOR CABLE
	Measuring	6	SIG-RET
	Circuitry			black
0.1uf	1M Ohm 33V 400W	7	A-OUT	Analog Output 4/20mA or 0/24mA or Voltage *
Logic ground and AC Power		8	A-RET
ground are connected for safety					RS 232 I/O *
and electromagnetic		9	TxD
interference considerations
		10	RxD		CAUTION: Connecting the RS-232C interface
					on instruments which do not have the option
		11	RET
					installed, will damage the instrument.
				+DC power 15V OUTPUT and/or 15-30V INPUT* 0.5A
		12	PS+
		13	AC GROUND
		14	Not Connected
		15	NC
	LO	16	NO
		17	C
Ordinary relay contacts: 10A, 250VAC or 30VDC	ALARMS*	18	Not Connected
Hermetically Sealed relay contacts: 3A, 120VAC
		19	NC
	HI	20	NO
		21	C

Instrument Circuit board

Note: * Options will function only if they are installed

Cable access to the XDT-NEMA enclosure is through three ports (refer to appendix E), which maintain the NEMA integrity:

•One 1/2” NPT conduit fitting, may be used for high or low voltage connections. This port is intended for the power and high voltage relay wiring.

•Two watertight cable grips located at the bottom of the instrument: for low voltage wiring only such as sensor, analog output, RS-232, or relays when used with low voltages. They accommodate cables with diameters 0.196” to 0.315”. To install a cable, loosen the nut, feed the cable through the grip and tighten the nut again. Unused cable grips should be plugged to maintain the integrity of the enclosure.

3.3.2.1 Connecting Power

The XDT is typically provided to be field wired to operate from AC Mains Power of 100 to 250VAC, 50/60Hz, 10VA, the instrument has an internal 0.5A, 250V fast acting fuse. However the XDT can also be optionally ordered to operate from 15 to 30 VDC 0.5A, with an internal 0.5A

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