Figure 2-9 Solid State Relay Output - Honeywell UDC2500 Product Manual

Load
Supply
Power
3
Load
Supply
Power
3
Load
Supply
Power
2
Load
Supply
Power
3
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
2
fuse accordingly. Use Fast Blo fuses only.
Electromechanical relays are rated at 5 Amps @ 120 Vac or 240 Vac or 30 Vdc.
3
Customer should size fuses accordingly. Use Fast Blo fuses only.
See Table 2-6 for relay terminal connections for other Output Algorithm Types.
4/07
Time Simplex
L1
L2/N
4
Relay Load
5
To terminal
6
4 or 6
7
Relay Load
8
To terminal
9
7 or 9
Time Duplex
L1
1
L2/N
Dummy Resistor
4
Relay Load
5
6
7
Relay Load
8
To terminal
9
7 or 9

Figure 2-9 Solid State Relay Output

UDC2500 Universal Digital Controller Product Manual
19
Output
20
Relay#1
N.O.
21
22
N.C. Alarm
Relay#2
23
N.O.
24
25
N.C. Alarm
Relay#1
26
N.O.
27
19
Output
20
Relay#1
N.O.
21
22
Output
Relay#2
23
N.O.
24
25
N.C. Alarm
Relay#1
26
N.O.
27
Installation
1
Dummy Resistor
Load
Relay Load
Supply
Power
2
1
Dummy Resistor
Load
Relay Load
Supply
Power
2
25