34
UNT Controller—Unitary (UNT) Controller
Figure 12 shows a jumper between 24 VAC and the triac. If the jumper is
between the triac and common make the following changes:
1. Disconnect TRIAC from HOA COM.
2. Reverse the COILS and TRIAC wires from RLY050 to the UNT.
3. Run a separate wire from HOA COM to 24 VAC at the Binary In
terminal section.
Figure 13 shows a UNT110/111 wired to an RLY050/002 with all BOs
isolated from earth ground.
BINARY IN
ANALOG INPUTS
BINARY OUTPUTS
AI CM
AI 1
AI CM
AI 2
AI CM
AI 3
AI CM
AI 4
AI CM
AI 5
AI CM
AI 6
+15VDC
24 VAC
BI 1
BI 2
BI 3
BI 4
+15VDC
BO 1
24VAC
BO 2
BO 3
BO 4
BO 5
BO 6
COMMON
TRIAC
BO 7
COMMON
COMMON
COMMON
COMMON
BO 8
24 VAC
24 VAC
24 VAC
24VAC
unt2ahu
Low
Vol tage
Hi gh
Voltage
(See
Note 1.)
Note 1: Separate low voltage wiring on the left from line voltage wiring on the right.
Note 2: Hand operation using the H/O/A switch requires common to the COILS
terminal and 24 VAC to the TRIAC terminal to energize the relay.
Note 3: The Hand or Off position signals the binary input connected to those terminals.
These switches can be hardwire "OR"ed and connected to one BI. This
switch uses the HOA COM terminal, which is isolated from the relays.
Note 4: Your application will determine exact connections to UNT.
AS-RLY050-0 / AS-RLY002-0
Note 3
COILS
TRIAC
HAND
OFF
HOA
COM
B
A
A
B
COM
NC
NO
COM
NC
NO
24 VAC (R)
24
VAC
COM (B)
110
VAC
Figure 13: UNT110/111 Wired to RLY050/002 with Isolated BOs
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