Siemens SIMATIC FM 351 - Digital Output Functions

4
4-12
FM 351 Positioning Function Module
EWA 4NEB 720 6001-02
The power stage is controlled by the digital outputs. The function of the digi-
tal outputs depends on the control mode. You select the control mode in the
parameterization interface.
Table 4-4 Digital Output Functions
Output
Q
Control Mode
Q
1
2 3 4
1Q0/2Q0 Rapid speed Rapid/creep
speed
Rapid speed Rapid speed,
positive
1Q1/2Q1 Creep speed Position reached Creep speed Creep speed,
positive
1Q2/2Q2 Approach, posi-
tive
Approach, posi-
tive
Approach, posi-
tive
Rapid speed,
negative
1Q3/2Q3 Approach, nega-
tive
Approach, nega-
tive
Approach, nega-
tive
Creep speed,
negative
You must connect a 24 V load power supply for the digital outputs to the ter-
minals 2L+ and 2M. The FM 351 Positioning Function Module does not op-
erate if the polarity is reversed.
!
Caution
Pay attention to the correct polarity for the load power supply (2l+, 2M).
If you connect the load power supply with incorrect polarity, the module is
defective and must be replaced.
Function of the
Digital Outputs
Load Power
Supply (2L+, 2M)
Wiring the FM 351