3
Table 1 — ISM Input/Output Descriptions
IOB (Input/Output Board) —
The IOB is supplied
from a 24 VAC supply reference to earth ground.
IOB CONFIGURATION — The input/output boards can be
configured for different types of input/output. If a an input or
output type is supported for the specific channel then it can be
modified in the Configuration Menu as shown in Table 2:
Table 2 — IOB Configuration
19XR6/7 IOB COMPONENTS AND WIRING — The com-
ponents listed in Tables 3-6 are available at the user’s termi-
nal block on the IOB. Some are available only if the unit is
operating in Remote mode. Fig. 2-5 show IOB wiring dia-
grams. Fig. 6-9 shows additional control wiring.
Communication Cables —
The communication trans-
mission cables have the following electrical characteristics:
• 2 signal conductors and one ground conductor of 20
AWG or larger, 100% shielded
• One tinned copper braid (65% coverage)
Recommended cables are shown below:
To avoid potential interference, route communication cables
between the starter and the chiller control panels as far away as
possible from high voltage cable and other likely disturbances.
Always separate communication cables from other cables and
always run wiring as directly as possible.
Fig. 1 — PIC 5 Control Interface and Connectors
a19-2139
1
2
3
4
5
PIC 5 BOTTOM VIEW
1 - POWER
S
UPPLY CONNECTOR
2 - LEN CONNECTOR
3
- CCN CONNECTOR
4 - ETHERNET CONNECTOR
5 - U
S
B CONNECTOR
PIC 5 CONTROL INTERFACE
Carrier Service Call: 1-800-379-6484
DESCRIPTION
POINT NAME
TYPE
PIN NUMBER
INPUT/OUTPUT
Communication
COMM
Dry Contact
J7-A,B,C
Input/Output
Compressor Run Contact
RUN_AUX
Dry contact
J2-11,12
Input
Compressor Start Contact
STAR_AUX
Dry contact
J2-9,10
Input
Compressor Start Relay
COMP_SR
Relay
J9-1,2
Output
Compressor Transition Relay
TRANS
Relay
J9-3,4
Output
Ground Fault Phase 1
GRFLT_31
0 to 5 V
J5-1,2
Input
Ground Fault Phase 2
GRFLT_23
0 to 5 V
J5-3,4
Input
Ground Fault Phase 3
GRFLT_12
0 to 5 V
J5-5,6
Input
Line Current C1
LN_AMPS1
0 to 5 A (RMS)
J4-1,2
Input
Line Current C2
LN_AMPS2
0 to 5 A (RMS)
J4-3,4
Input
Line Current C3
LN_AMPS3
0 to 5 A (RMS)
J4-5,6
Input
Line Voltage V1
LN_VOLT1
0 to 575 VAC
J3-1
Input
Line Voltage V2
LN_VOLT2
0 to 575 VAC
J3-2
Input
Line Voltage V3
LN_VOLT3
0 to 575 VAC
J3-3
Input
Shunt Trip Relay
TRIPR
Relay
J9-5,6
Output
Starter Fault
STARTFELT
Dry contact
J2-7,8
Input
VFD Speed Feedback
VFD_IN
0 to 5 V (default), or
0 to 10 V (selectable)
J6-1,2
Input
VFD Target Speed
VFD_OUT
0 to 20 mA
J8-1,2
Output
ANALOG INPUT
ANALOG OUTPUT
0
Disable
0
Disable
1
0 to 5 VDC
1
4 to 20 mA
2
4 to 20 mA
2
0 to 10 VDC
3
10 k
(thermistor)
4
5 k
(thermistor)
5
Ohm (Shift_Dis)
6
100 Ohm RTD
USAGE
CABLE
Intra-Building
Belden 8772
High Temperature
Belden 85240
Plenum
Belden 89418
