Figure 2-7 Electromechanical Relay Output; Figure 2-8 Solid State Relay Output - Honeywell UDC2500 Product Manual

Load
Supply
Power
2
Load
Supply
Power
1
Electromechanical relays are rated at Amps @120 Vac or 30 Vdc and 2.5 Amps at 240 Vac.
1
Customer should size fuses accordingly. Use Fast Blo fuses only.
Load
Relay Load
Supply
Power
2
Load
Relay 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 30 Vdc and 2.5 Amps at 240 Vac.
3
Customer should size fuses accordingly. Use Fast Blo fuses only.
Relay Load
To terminal
4 or 6
Relay Load
To terminal
7 or 9

Figure 2-7 Electromechanical Relay Output

L1
L2/N
4
5
To terminal
6
4 or 6
7
8
To terminal
9
7 or 9

Figure 2-8 Solid State Relay Output

UDC2500 Universal Digital Limit ControllerProduct Manual
19
N.C.
Output
20
L1
Relay#1
N.O.
21
L2/N
22
4
N.C.
Alarm
23
5
Relay#2
N.O.
6 24
25
7
N.C.
Alarm
8 26
Relay#1
N.O.
9
27
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
Installation
Relay Load
To terminal
19 or 21
1
1
Dummy Resistor
Load
Relay Load
Supply
Power
2
xxxxx
Load
Supply
Power
xxxx
23