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Table 12 — ACS320 VFD Terminal Designations
TERMINAL
U1
V1
Three-Phase main circuit input power supply
W1
U2
Three-Phase AC output to motor, 0V to maximum
V2
input voltage level
W2
10 (GND)
Factory-supplied jumper
11 (COMMON)
9 (24 VDC)
Run (factory-supplied jumper)
12 (DI-1)
9 (24 VDC)
Start Enable 1 (factory-supplied jumper). When
15 (DI-4)
opened, the drive goes to emergency stop
13 (DI-2)
Factory wired for 24 Vdc input from Fan Speed
14 (DI-3)
Board
ACS320 VFD TERMINAL STRIP
9
10
11
PNK
Fig. 29 — ACS320 VFD Wiring
Table 13 — ACH550/580 VFD Terminal Designations
TERMINAL
U1/L1
V1/L2
Three-Phase main circuit input power supply
W1/L3
U2 / T1/U
Three-Phase AC output to motor, 0V to maximum
V2 / T2/V
input voltage level
W2 / T3/W
11 (GND)
Factory-supplied jumper
12 (COMMON)
10 (24 VDC)
Run (factory-supplied jumper)
13 (DI-1)
10 (24 VDC)
Start Enable 1 (factory-supplied jumper). When
16 (DI-4)
opened, the drive goes to emergency stop
14 (DI-2)
Factory wired for 24 Vdc input from Fan Speed
15 (DI-3)
Board
ACH550/580ACH VFD TERMINAL STRIP
10
11
12
PNK
Fig. 30 — ACH550/580 VFD Wiring
Central Terminal Board Jumpers
(48/50 Series Only)
The Central Terminal Board (CTB) is a large printed circuit board
that is located in the unit control box. This printed circuit board
contains multiple termination strips and connectors to simplify
factory control box wiring and field control connections. Termi-
nals are clearly marked on the board surface. See Fig. 31.
FUNCTION
12
13
14
15
YEL
WHT
FUNCTION
13
14
15
16
YEL
WHT
The CTB contains no software and no logic. But it does include
seven configuration jumpers that are cut to configure the board to
read external optional and accessory controls, including that the
unit is a heat pump. Table 14 lists the control functions of the
jumpers.
Table 14 — CTB Jumpers
JUMPER
CONTROL FUNCTION
JMP1
Phase Monitor
JMP2
Occupancy Control
Smoke Detector
JMP3
Shutdown
JMP4
Remote Shutdown
JMP5
Heat Pump/Reheat
JMP6
Heat Pump/Reheat
JMP7
Heat Pump/Reheat
Jumpers JMP5, JMP6 and JMP7 are located in notches across the
top of the CTB (see Fig. 31). These jumpers are intact on units
with gas heat or electric heat. These jumpers are factory cut on all
heat pump units and on units with Humidi-MiZer
option.
Factory-installed boards will have these jumpers factory-cut
where required. Service replacement boards have these jumpers
intact; servicer must cut these jumpers as indicated in Table 15
when installing a replacement board.
Table 15 — Jumper Configuration
Configuration
Gas Heat
Jumper
48HC, TC
JMP5
Intact
JMP6
Intact
JMP7
Intact
NOTE(S):
Unit without Humidi-MiZer (reheat) option.
a.
Fig. 31 — Central Terminal Board (CTB)
20
NOTE
50HCQ, TCQ default: Cut
50HCQ, TCQ default: Cut
50HCQ, TCQ default: Cut
®
(reheat) system
UNIT TYPE / MODEL
Electric Heat
Heat Pump
a
50 HC, TC
a
50HCQ, TCQ
Intact
Cut
Intact
Cut
Intact
Cut
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