Application Examples Operation Mode 6, 7, 8: Stepping Operation
L+
start
A1+ X44
S43
BH5902
A2-
M1
L-
Picture 6: Stepping operation with 3 light curtains
L+
start
A1+ X44
S43
BH5902
A2-
M1
L-
Picture 7: Stepping operation with 3 light curtains and contact reinforcement by external contactors, 2-channel operation
(switching of feedback input can also be used at protective operation with muting)
The feed back circuit of the external relays is only tested when the module is started by pressing the push button. When using this
circuit the safe function has to be tested in regular intervalls. This can be done by interrupting a light curtain so that a reset requires
activation of the start button. activating the module is only possible when all external relays are de-energized.
transmitter
LC 1
(step input)
S44
S12 S14
M2
48
wait for access
fault indication
transmitter
LC 1
K21
K22
S44
S12 S14
M2
48
wait for access
fault indication
transmitter
LC 2
S21 S22
S24 S23
K1
K2
13
23
33
34
machine enabling
transmitter
LC 2
S21 S22
S24 S23
K1
K2
13
23
33
34
machine enabling
K22
31
transmitter
LC 3
machine contact
S31 S32
S34 S33
S41 S42
24
14
58
wait for start
transmitter
LC 3
machine contact
S31 S32
S34 S33
S41 S42
24
14
58
K21
wait for start
BH 5902/01MF2 / 26.01.21 en / 296A
M8051_b
M8053_b