CR720S CR721S
14
6.11 Digital / PWM outputs, H-bridge
supply
controller
VBB
30
nn
VBB
15
nn
VBB
0
nn
VBB
1
nn
VBB
2
nn
VBB
3
nn
VBB
4
nn
VBB
5
nn
GND
SYS
nn
GND
1...4
nn
load
nn
nn
PWM
L
, B
L
nn
PWM
H
, B
H
PWM
L
, B
L
nn
PWM
H
, B
H
load
nn
PWM
L
, B
L
nn
PWM
H
, B
H
load
load
Group
n
Group
n
Group
n
Shield
Fig. 10: Connection of the low-side digital outputs (PWM
L
, B
L
), example CR721S
The controller can be connected to the following loads:
•
resistive loads
•
capacitive loads (adapt diagnostic settings to the load, see programming manual)
•
inductive loads
The connected load must not exceed the maximum permissible values of the respective output (
Ò
Technical data).
u
Supply low-side outputs (B
L
) via a high-side output (B
H
) of the same output group.
Deviating connections are not permitted.
6.12 Mixed operation (12 V / 24 V)
In case of supply via PELV, mixed operation is not permitted.
Mixed operation is only permitted in case of supply via the on-board system.
supply
output
nn
output
nn
output
nn
controller
VBB
30
nn
VBB
15
nn
VBB
0
nn
VBB
1
nn
VBB
2
nn
VBB
3
nn
VBB
4
nn
VBB
5
nn
GND
SYS
nn
GND
1...4
nn
input
24 V
12V
nn
input
nn
GND
ANA
nn
nn
input
nn
sensor
sensor
sensor
load
load
load
GND
OVA
Shield
nn
GND
RES
Fig. 11: Example connection to 24 V and 12 V power supply combined, example CR721S
The operation of the output groups is possible with different supply voltages.
u
VBB
0
, VBB
30
and VBB
15
must be connected to the common star point.
