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Default I/O connection diagram (RDCU – A41)
UPDATE:
Terminal block size:
2
cables 0.3 to 3.3 mm
(22 to 12 AWG)
Tightening torque:
0.2 to 0.4 N·m
(0.2 to 0.3 lbf·ft)
1) Total maximum current shared
between this output and the
optional modules installed on the
board.
RMIO
X20
1
VREF-
By default, not in use. -10 V DC, 1 kohm <
R
< 10 kohm
2
AGND
L
X21
1
VREF+ By default, not in use. 10 V DC, 1 kohm <
R
< 10 kohm
2
AGND
L
3
AI1+
Insulation resistance measurement
0 ... 10 V (option +Q954), R
4
AI1-
5
AI2+
AC cubicle ambient temperature
measurement 4...20 mA
6
AI2-
7
AI3+
DC cubicle ambient temperature
measurement. 4...20 mA
8
AI3-
9
AO1+
Fan speed control for LCL filters.
0(4)...20 mA, R
10
AO1-
11
AO2+
By default, not in use. 0(4)...20 mA, R
700 ohm
12
AO2-
X22
1
DI1
Fan acknowledgement and LCL filter
temperature supervision
2
DI2
Run enable. 0 = Inverter run is disabled
1 = Inverter run is enabled
3
DI3
Status of the AC contactor K1.1.
0 = Open, 1 = Closed
4
DI4
Ground fault supervision (options +Q954
and +Q976)
5
DI5
By default, not in use.
6
DI6
Status of the 24 V auxiliary power buffer.
0 = Buffer is not full, 1 = Buffer is full
7
+24VD
+24 V DC max. 100 mA
8
+24VD
9
DGND1 Digital ground
10
DGND2 Digital ground
11
DIIL
By default, not in use.
X23
1
+24V
Auxiliary voltage output and input, non-
isolated, 24 V DC 250 mA
2
GND
X25
1
RO1
Relay output 1: Charging contactor
control
2
RO1
3
RO1
X26
1
RO2
Relay output 2: Control of the AC
contactor K1.3
2
RO2
3
RO2
X27
1
RO3
Relay output 3: Control of the AC
contactor K1 / K1.1.
2
RO3
3
RO3
= 200 kohm
in
-30...+80 °C.
-30...+80 °C.
< 700 ohm
L
<
L
1)
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