Carel µC2 User Manual

54
G0 B5 B6 B7 ID10 ID8 ID6
G GND GND Y GND ID9 ID7
cond. probe outlet probe inlet probe
low press.
multi funct. multi funct. high press. remote ON/OFF
GND
B8
V+
P
pressure
probe
temperature
probe
digital
input
Line
L
N
Tx/RxGND
Bottom
No6 C6/7 C6/7 C8/9 x C10
No7 No8 No9 C8/9 x No10
Line
L
N
Tx/Rx GND
Top
EV Driver
t-LAN
EV driver
Expansion board
G Vbat DI1 S4V S3 S2 S1
G0 GND DI2 S4I Vr1 Vr2 OC GNX RT+ RT-
MOLEX
¡
Mini-Fit
538-39-01-2140
1 GND 2
3 GND 4
COM NO
MOLEX
¡
Mini-Fit
538-39-01-2060
PHOENIX
¡
GMSTB 2,5/2 ST
PHOENIX
¡
MC1,5/3-ST-3,81
EEV driver
FCSER00000
E N G L I S H
µC
2
- +030220731 - rel. 1.2 - 26.10.2007
7.2 Expansion card
This device allows the µC
2
to manage the second refrigerant circuit on chillers, heat pumps and conden-
sing units with up to 4 hermetic compressors.
The following figure shows the connection diagram for the µC
2
expansion card, code MCH200002*.
Fig. 7.c
NOTE: The expansion features two LEDs on the main board (to see these, remove the top or bottom
door), which display its status by the following messages:
ON Flashing
green LED Board powered Board powered and serial communication with µC
2
in progress
red LED 1 flash: Probe fault alarm
2 flashes: Zero crossing alarm (mains frequency not detected)
3 flashes: Serial communication alarm with EVD
4 flashes: Serial communication alarm with µC
2
Table 7.b
The alarms are displayed in sequence and are separated from each other by pauses.
7.3 EVD4*: Electronic expansion valve driver
This device is used to control electronic expansion valves. The device is connected to the µC
2
via a tLAN
serial line. The condensing pressure probe must be connected to the µC
2
, which then sends the reading
to the driver.
Note: for all other information on the connections, refer to the EVD4* driver manual
Fig. 7.d

Carel µC2 Specifications

General

Brand	Carel
Model	µC2
Category	Controller
Language	English