Control Modules; Inputs; Outputs - Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual

Control Modules
Turn controller power off before servicing controls. This
ensures safety and prevents &image to the controllec
The ICVC and CCM modules perform continuous diagnos-
tic evaluations of the hmdware to determine its condition.
Proper operation of all modules is indicated by LEDs
(light-emitting diodes) located on the circuit board of the ICVC
and CCM.
There is one green LED located on the CCM board, and one
red LED located on the ICVC and CCM boards respectively.
RED LED (Labeled as STAT) --If the red LED:
• Blinks continuously at a 2-second interval, the module is
operating properly
• Is lit continuously, there is a problem that requires
replacing the module
• Is off continuously, the power should be checked
• Blinks 3 times per second, a software error has been
discoveled and the module must be replaced
If there is no input powel, check the luses and circuit breaker
If the fuse is good, check for a shorted secondary of the trans-
former or. if power is present to the module, replace the module.
GREED LED (Labeled as COM)-- These LEDs indicate
the communication status between different paris of the con-
troller and the network modules and should blink continuously.
Notes on Module
Operation
1. The chiller operator monitors and modifies configura-
tions in the microprocessor by using the 4 softkeys and
the ICVC. Communications between the [CVC and the
CCM is accomplished through the SIO (Sensor Input/
Output) bus, which is a phone cable. The communication
between the CCM and VFD is accomplished through the
sensor bus, which is a 3-wire cable.
2. If a green LED is on continuously, check the communica-
tion wiring. If a green LED is off. check the red LED
operation. If the red LED is normal, check the module
address switches (SWI) (Fig. 44 and 45). Confirm _dl
switches _ue in OFF position.
All system operating intelligence resides in the ICVC.
Some safety shutdown logic resides in the Gateway in
case communications are lost between the VFD and
ICVC. Outputs are controlled by the CCM and VFD as
well.
3. Power is supplied to the modules within the control panel
via the 24-vac TI and T2 transformers. The transformers
_u'e located within the power panel.
In the power panel, TI supplies power to the compressor
oil heatel: and optional hot gas bypass, and T2 supplies
power to both the ICVC and CCM.
T3 provides 24V power to the optiomd DataPort
TM
or
DataLINK
TM
modules.
Power is connected to Plug Jl on each module.
Chiller Control Module (CCM) (Fig 45)
INPUTS -- Each input channel has 2 or 3 terminals. Refer to
individual chiller wiring diagrams for the con'ect terminal
numbers for a specific application.
OUTPUTS- Output is 24 vac. There are 2 termimds per
output. Refer to the chiller wiring diagram for a specific
application for the correct terminal numbel_.
CONTRAST
ADJUSTMENT
MODULE PART NUMBER
SOFTWARE PART NUMBER
@
BACK OFICVC
o o @ o \
ICVC [
/ / \
J7 SIO J1 POWER/ J8 SERVICE
CCN
CCN INTERFACE
CONNECTION
/
We • / •
m
DATALINK OR
DATAPORT MODULE (OPTION)
[]
CB1
SWl
Fig 44 -- Rear of ICVC (International Chiller Visual Controller)
97