Honeywell UDC2500 manual Solid State Relay Output

								Installation
			Time Simplex					1
						19	Dummy Resistor
			L1	Output		20	Relay Load	Load
				Relay#1
					N.O.			Supply
			L2/N			21	2	Power
			4	N.C. Alarm		22
Load		Relay Load
			5	N.O. Relay#2		23
Supply
Power		To terminal	6			24
	3	4 or 6
			7			25
Load		Relay Load		N.C. Alarm
			8	Relay#1		26
Supply
		To terminal		N.O.
Power			9			27
	3	7 or 9
			Time Duplex				Dummy Resistor1
						19
			L1	Output		20	Relay Load	Load
				Relay#1
		1			N.O.			Supply
			L2/N			21		Power
		Dummy Resistor					2
						22
			4	Output
Load
		Relay Load
Supply			5	Relay#2		23
				N.O.
Power	2		6			24
			7			25
Load		Relay Load		N.C. Alarm
			8	Relay#1		26
Supply				N.O.
		To terminal	9			27
Power
	3	7 or 9

If the load current is less than the minimum rated value of 20 mA, then there may be residual voltage across both

1 ends of the load even if the relay is turned off. Use a dummy resistor as shown to counteract this. The total current through the resistor and the the load must exceed 20 mA. Solid State Relays are zero-crossing type.

Solid State relays are rated at 1 Amp at 25°C and derated linearly to 0.5 Amp at 55°C. Customer should size

2fuse accordingly. Use Fast Blo fuses only.

3Electromechanical relays are rated at 5 Amps @ 120 Vac or 240 Vac or 30 Vdc. Customer should size fuses accordingly. Use Fast Blo fuses only.

Figure 2-9 Solid State Relay Output

See Table 2-6for relay terminal connections for other Output Algorithm Types.

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