Digital Output Functions - Siemens SIMATIC FM 351 Installation Manual

Wiring the FM 351
Function of the
Digital Outputs
4
Load Power
Supply (2L+, 2M)
4-12
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 Q
1Q0/2Q0 Rapid speed
1Q1/2Q1 Creep speed
1Q2/2Q2 Approach, posi-
tive
1Q3/2Q3 Approach, nega-
tive
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.
Control Mode
1
2
Rapid/creep Rapid speed
speed
Position reached Creep speed
Approach, posi- Approach, posi-
tive tive
Approach, nega- Approach, nega-
tive tive
FM 351 Positioning Function Module
3 4
Rapid speed,
positive
Creep speed,
positive
Rapid speed,
negative
Creep speed,
negative
EWA 4NEB 720 6001-02