ABB DCS 400 - 3.5 Control Board SDCS-CON-3 A

II K 3-7
Technical data 3.5 Control Board SDCS-CON-3A
Control functions (Watchdog)
The control board has an internal watchdog. The
watchdog trip has the following effects:
- Thyristor firing control is reset and disabled.
- Digital outputs are forced to '0 V'.
Fig. 3.5/1 Layout of the control board SDCS-CON-3A
Fig. 3.5/2 Seven segment display of the SDCS-CON-3A
Seven segment display
A seven segment display is located on the control
board and it shows the state of drive.
If +5 V drops under the tripping level, it causes a
master reset by hardware. All I/O registers are forced
to 0 and the firing pulses are suppressed.
If mains monitor trips, firing pulses are forced to
inverter stability limit.
Supply voltage monitoring
Supply voltage +5 V Mains
Undervoltage tripping level +4.50 V £97 VAC
Serial interfaces
The control board SDCS-CON-3A has three serial
communication channels:
• X7: is a serial communication channel which is
used for
- DCS 400 PAN
- Adapter (3AFE 10035368)
• X6: is a standard RS232 serial communication
channel. It is a 9-pin D-Sub female connector
• V800 is an integrated channel and can be used
for Fieldbus Adapter by using optical fibre
1
2
1
2
3
10
11
12
1
3
4
2
X1 X2 X3 X4 X5 X8
S4

S2

S1

5
6
R115
X6
S5

X7
X12X13
41 91 81 101 5 1
2
233.5
190

6
6
6

5
6
5
6
1
2
3
11
12
10
1
2
3
11
12
10
1
2
3
11
12
10
1
2
3
11
12
10
5 V 24 V
5 V
24 V
13
42
1
3
4
2
6
RS232
DDCS
V800

S5:5-6 int.Micro-controller Flash Prom
S5:1-2 Boot Mode
+10V
S1:
-
+
22 K
4
X2:3
56PTC
5
GND
15
6
2
1
2
1
2

12
78
12
78
-XPSHUFRGLQJ
default value
AI2 used for temp.
measurement via PTC
single ended:
Tacho and PTC
All supports are conductive
connected to GND
differential:
Pulse encoder
Tacho signal
connected to GND
AI2 as ref input
Firmware download via RS232
Note: change Jumper position only if electronics is switched off
Firmware download
Normal operation
For firmware download via RS232
S5:1-2 and 5-6 have to be jumpered
Meas. point
I
A act
'RQRWFKDQJH
MXPSHUVHWWLQJRI6
*
Tacho signal not
connected to GND
(park position only)
-
-
-
+
4
2
3
X1:1
GND
1
S1
T
-
+
2
34
0.7s 0.7s 0.7s
RAM/ROM memory test error
Normal situation
Program is not running
Alarm
Fault