18
CT-600-2
Terminal plan ACP LINK panel
7.2
Electrical panel IO-module (M172)
The M172 module for the electrical panel is supplied loose and to be installed by the customer (see also
section 6.3). The terminal plan below shows how to connect the module to the ACP LINK panel, the plant,
the optional eco system module and optional sensors. Section 11.1 gives an overview of the I/O signals and
further descriptions. For BITZER supplied electrical panels, the M172 module is installed and partly pre-
wired.
Terminal plan electrical panel I/O module (M172)
CN
1
9
GND
RS485
‐
1
GS
From
ACP
HMI.
Installed
and
cable
supplied
by
customer
(3x0,6
Modbus
RTU
standard,
Belden
3106A
or
equivalent).
Terminate
with
120
Ω
resistor
‐
RS485
‐
1
‐
+
RS485
‐
1
+
CN
1
5
DO11
Not
used
(spare)
Up
to
250V,
3A
DO10
Not
used
(spare)
Up
to
250V,
3A
DO9
Eco
system
running
Up
to
250V,
3A
C91011
Common
CN
1
4
C12
Common
DO12
‐
Not
used
(spare)
Up
to
250V,
1A
DO12
Not
used
(spare)
Up
to
250V,
1A
CN
1
3
AI9
+
Process
temperature
PT1000
default
AI10
+
Auxilary
temperature
(not
used)
PT1000
default
AI11
+
Remote
setpoint
1
0
‐
10V
default
AI12
+
Remote
setpoint
3/External
Capacity
Limiter
in
Auto
mode
0
‐
10V
default
GND
Connect
to
all
voltage
sensors
and
3
‐
wire
current
sensors
5Vdc
Use
for
0
‐
5V
rat.
(where
applies)
24Vdc
Use
for
current
sensors
CN
1
2
COM
‐
DI
24VDC
‐
DI9
Not
used
(spare)
DI10
24VDC+
Drive/motor
error
1
Contact
in
motor
or
drive
DI11
24VDC+
Drive/motor
error
2
DI12
24VDC+
Drive/motor
error
3
CN
1
1
GND
Common
AO5
+
Not
used
(spare)
AO6
+
Not
used
(spare)
CN
1
0
‐
24VDC
‐
Customer
supply
from
transformer
in
electrical
panel,
type
T
fuse
2
A
+
24VDC+
Customer
supply
from
transformer
in
electrical
panel,
type
T
fuse
2
A
CN
9
C2
Relay
Common
for
D02
DO2
Relay
Common
alarm
Up
to
250V,
3A
C1
Relay
Common
for
D01
D01
Relay
Shut
down
Up
to
250V,
3A
CN
8
DO4
Relay
Run
signal
Up
to
250V,
3A
DO3
Relay
Ready
for
operation
Up
to
250V,
3A
C34
Relay
Common
CN
7
DO7
Relay
Not
used
(spare)
Up
to
250V,
3A
DO6
Relay
Start
request
chiller
pump
Up
to
250V,
3A
DO5
Relay
Start
permission
HP/LP
(for
booster
only)
Up
to
250V,
3A
C567
Relay
Common
