LORCH P-Basic - Pc-board DCDR21; DCDR23

Pc-Boards
- 32 - 02.20909.2710.1-06
7.11 Pc-board DCDR21 / DCDR23
The pc-board DCDR21 is the primary driver board of the S5 and S8 / P4500 and P5500.
The pc-board DCDR23 is the primary driver board of the S3 and P3x0 mobile.
Functions
– encoding power unit
– connection temperature sensor of heat sink
– supply current sensor
– monitoring bus voltage
– safety shut-down of power unit
– passthrough signal for power-up relays
– passthrough signal from current sensor
Encoding power unit
The DIP switch is used to set the type of the power unit.
DIP1 DIP2 setting type
OFF OFF 240A S5 / P4500
OFF ON 350A S3 / P3x00
ON OFF 300A S8 / P5500
ON ON reserved
Tab. 16: DIP switch DCDR
LEDs
LED state meaning
1 (red) off normal operation
on input current too high, power unit is blocked
2 (green) off no supply for driver circuit low-side
on supply for driver circuit low-side is ok
4 (green) off bus voltage too high
on bus voltage ok
5 (green) off no supply for driver circuit high-side
on supply for driver circuit high-side is ok
6 (green) off bus voltage too low
on bus voltage ok
Tab. 17: LEDs pc-board DCDR
Measuring points
designation
measuring
point
result
supply voltage current sensor X2-1
X2-6
+
gnd
+15V DC
X2-3
X2-6
-
gnd
-15V DC
temperature sensor X3-1
X3-2
gnd
+ 10kΩ at 25°C
Tab. 18: Measuring points DCDR