Local Equipment Network; Board Addresses; Touch Pilot Display; Control Module Communication - Carrier AQUAFORCE 30XW150-400 Operation & Service Manual

Table 9 — Energy Management Module (EMM) Inputs and Outputs
INPUT/OUTPUT
4-20 mA Demand Limit 4-20 mA Demand Limit
4-20 mA Temperature 4-20 mA Temperature Reset/
Reset/Cooling Setpoint Cooling Set point
Demand Limit SW2 Demand Limit Step 2
Ice Done Ice Done Switch
Occupancy Override Occupied Schedule Override
Remote Lockout Switch Chiller Lockout
SPT Space Temperature Thermistor
% Total Capacity Percent Total Capacity Output
RUN R Run Relay
SHD R Shutdown Relay
CA_S Run Status for Circuit A
CB_S Run Status for Circuit B
* A field-supplied 1/2 watt 250 ohm resistor is required across terminals TB6-1,2 (CH6) and/or TB6-3, 4 (CH5).
Local Equipment Network —
mitted between modules via a 3-wire communication bus or
LEN (Local Equipment Network). External connection to the
LEN bus is made at TB3.
All boards (except the Main Base
Board Addresses —
Board and Energy Management Module Board) have
8-position DIP switches.
Touch Pilot™ Display —
connections are shown in Table 10. Wiring is shown in Fig. 13.

Control Module Communication

RED LED — Proper operation of the control boards can be
visually checked by looking at the red status LEDs (light-
emitting diodes). When operating correctly, the red status
LEDs will blink in unison at a rate of once every 2 seconds. If
the red LEDs are not blinking in unison, verify that correct
power is being supplied to all modules. Be sure that the Main
Base Board (MBB) is supplied with the current software. If
necessary, reload current software. If the problem still persists,
replace the MBB. A red LED that is lit continuously or blink-
ing at a rate of once per second or faster indicates that the board
should be replaced.
GREEN LED — All boards have a green LEN (SIO) LED
which should be blinking whenever power is on. If the LEDs
are not blinking as described check LEN connections for
DESCRIPTION I/O TYPE
4-20 mA*
4-20 mA*
Switch Input
Switch Input
Switch Input
Switch Input
10k Thermistor
0-10 vdc
Relay
Relay
Relay
Relay
Information is trans-
The Touch Pilot display port
Fig. 13 — Touch Pilot™ Display Wiring
DISPLAY MODULE POINT NAME
Limit 4-20 mA Signal, DMD
Reset/Setpnt 4-20 mA Signal, RSET
Switch Limit Setpoint 2, DLS2
Ice Done Storage Switch, ICE.D
Occupied Override Switch, OCCS
Remote Interlock Switch, RLOC
Optional Space Temp, SPT
Chiller Capacity Signal, CATO
Running Status, RUN
Shutdown Indicator State, SHUT
Compressor A Run Status, Q_RUN_A
Compressor B Run Status, Q_RUN_B
potential communication errors at the board connectors. See
input/output Tables 3-10 for LEN connector designations. A
3-wire bus accomplishes communication between modules.
These 3 wires run in parallel from module to module. The J9A
connector on the MBB provides communication directly to the
Navigator™ display module.
YELLOW LED — The MBB has one yellow LED. The
Carrier Comfort Network
of network communication.
Table 10 — Touch Pilot™ Display Port
CONNECTOR
J1 (Power)
J2 (COM1)
J3 (RJ11)
17
CONNECTION POINT
EMM-J7B-CH6
EMM-J7A-CH5
EMM-J4-CH9
EMM-J4-CH11A
EMM-J4-CH8
EMM-J4-CH10
EMM-J6-CH2
EMM-J8-CH7
EMM-J3-CH25
EMM-J3-CH24
EMM-J2A-CH17
EMM-J2A-CH18
® (CCN) LED will blink during times
Connections
PIN FUNCTION
1 24VAC +
2 24VAC -
3 Earth Ground
1 RS485 Port (D+)
2 RS485 Port (GND)
3 RS485 Port (D-)
1 24VAC (+)
2 RS485 Port (D+)
3 RS485 Port (GND)
4 Unused (no connect)
5 RS485 Port (D-)
6 24VAC(-)