Honeywell UDC2500 - Figure 2-10 Open Collector Output

Installation
26 UDC2500 Universal Digital Controller Product Manual 4/07
A
larm
Relay#1
L1
L2/N
4
5
7
8
9
N.C.
N.O.
Time Simplex
2
3
A
larm #2 is not available with Time Proportional Duplex or Three Position Step Control unless the Dual Relay option is used.
Electromechanical relays are rated at 5 Amps @ 120 Vac or 240 Vac or 30 Vdc.
Customer should size fuses accordingly. Use Fast Blo fuses only.
19
20
21
22
23
24
25
26
27
Time Duplex
A
larm
Relay#2
N.C.
N.O.
6
A
larm
Relay#1
L1
L2/N
4
5
7
8
9
N.C.
N.O.
19
20
21
22
23
24
25
26
27
6
To terminal
7 or 9
Relay Load
3
Load
Supply
Power
–
+
+
–
Output #1
1
+
–
Customer Supplied
Electromechanical relay
Customer Supplied
Solid-State relay
–
+
+
–
Output #1
1
+
–
Customer Supplied
Electromechanical relay
Customer Supplied
Solid-State relay
–
+
+
–
Output #2
1
+
–
Customer Supplied
Electromechanical relay
Customer Supplied
Solid-State relay
CAUTION
Open collector outputs are internally powered at +30 Vdc. Connecting an external
power supply will damage the controller.
1
2
To terminal
4 or 6
Relay Load
To terminal
7 or 9
Relay Load
3
3
Load
Supply
Power
Load
Supply
Power
Figure 2-10 Open Collector Output
See Table 2-6 for relay terminal connections for other Output Algorithm Types.