Carel uC2SE, User Manual

Page: 63 / 76

63
G0 B5 B6 B7 ID10 ID8 ID6
G GND GND Y GND ID9 ID7
cond
. pr
obe
outlet pr
obe
inlet pr
obe
lo
w pr
ess
.
multi func
t.
multi func
t.
multi func
t.
high pr
ess
.
GND B8 V+
P
pressure
probe
temperature
probe
digital
input
Line
L N
Tx/Rx GND
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
multi
funct.
multi
funct.
multi
funct.
multi
funct.
G V
bat
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
ENGLISH
μC 2 SE - +030220426 - rel. 2.1 - 09.06.2010
7.2 Expansion card
This device allows the μC 2 SE to manage the second refrigerant circuit on chillers, heat pumps and
condensing units with up to 4 hermetic compressors.
The following fi gure shows the connection diagram for the μC
2 SE expansion card, code
MCH200002*.
Fig. 7.b
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 SE in
progress
red LED 1 fl ash: Probe fault alarm
2 fl ashes: Zero crossing alarm (mains frequency not detected)
3 fl ashes: Serial communication alarm with EVD
4 fl ashes: Serial communication alarm with μC
2 SE
Table 7.c
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
SE
via a tLAN serial line. The condensing pressure probe must be connected to the μC
2
SE, which
then sends the reading to the driver.
Nota:
for all other information on the connections, refer to the EVD4* driver manual.
Fig. 7.c