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Control systems
CR7021
Input channels
Possible confi gurations
Output channels
Possible confi gurations
Legend
ifm electronic gmbh ● Friedrichstraße 1 ● 45128 Essen
Number
Signal
Version
8
digital
for positive sensor signals
or
analogue
0...10/32 V, 0/4...20 mA or ratiometric
4
digital
for positive sensor signals
4
digital
for positive sensor signals
or
frequency
max. 30 kHz
4
digital
for positive sensor signals
or
frequency
max. 1 kHz
8
digital
for positive / negative sensor signals
Number
Signal
Version
4
digital
positive-switching (high side), with diagnostic capability
or
PWM
PWM frequency 20...250 Hz
or
current-
0.1...4 A
controlled
4
digital
positive-switching (high side), with diagnostic capability
or
PWM
PWM frequency 20...250 Hz
or
current-
0.1...4 A
controlled
8
digital
positive-switching (high side), with diagnostic capability
4
digital
positive-switching (high side), with diagnostic capability
or
PWM
PWM frequency 20...250 Hz
4
digital
positive/negative switching (high/low
side), with diagnostic capability
(can also be used as H bridge)
*) only high side outputs safety-related
▲
safety-related
–
not safety-related
A
analogue
B
binary high side
H
B
binary low side
L
FRQ/CYL
frequency inputs
I
pulse high side
H
I
pulse low side
L
PWM
pulse width modulation
PWM
current-controlled output
I
IEC address for analogue input
%IW...
IEC address for binary input
%IX...
IEC address for binary output
%QX...
H bridge function
H
supply outputs
VBB
O
supply sensors/module
VBB
S
supply via relay
VBB
R
Observe the notes on the confi guration of the inputs/outputs!
(→ system manual "SafetyController")
Ensure that the channels are not used as inputs/outputs at the same time!
We reserve the right to make technical alterations without prior notice!
SafetyController CR7021
Technical data
CR7021 / page 4
B
▲
L
A
▲
B
–
L
B
▲
L
I
–
L
B
▲
UK
L
I
–
L
B
–
L/H
B
–
H
PWM
–
PWM
–
I
B
▲
H
PWM
–
PWM
–
I
B
–
H
B
▲
H
PWM
–
B
▲
L/H*
H
–
23.08.2017
13
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