4
4-10
FM 351 Positioning Function Module
EWA 4NEB 720 6001-02
Table 4-2 shows the assignment of the 20-pin front connector.
Table 4-2 Front connector assignment
Teminal Name Meaning
1 1L+ 24 VDC encoder supply
2 1M Ground, encoder supply
3 1I 0 Digital input 0 of channel 1
4 1I 1 Digital input 1 of channel 1
5 1I 2 Digital input 2 of channel 1
6 1I 3 Digital input 3 of channel 1
7 2I 0 Digital input 0 of channel 2
8 2I 1 Digital input 1 of channel 2
9 2I 2 Digital input 2 of channel 2
10 2I 3 Digital input 3 of channel 2
11 1Q 0 Digital output 0 of channel 1
12 1Q 1 Digital output 1 of channel 1
13 1Q 2 Digital output 2 of channel 1
14 1Q 3 Digital output 3 of channel 1
15 2Q 0 Digital output 0 of channel 2
16 2Q 1 Digital output 1 of channel 2
17 2Q 2 Digital output 2 of channel 2
18 2Q 3 Digital output 3 of channel 2
19 2L+ 24 VDC load power supply
20 2M Ground, load power supply
Here connect a 24 VDC encoder supply for the encoder. The reference poten-
tial of this supply (1M) is connected to the ground of the load power supply
(2M) in the FM 351.
The 24 VDC encoder supply is monitored for undervoltage and wire break-
age.
The 24 VDC encoder supply is converted internally to 5 VDC. This means
that 24 VDC and 5 VDC are provided on the encoder interface (Cannon con-
nector X2 and X3) for the different types of encoders.
!
Caution
Make sure the polarity of the encoder supply (1L+, 1M) is correct.
If you connect the encoder supply with incorrect polarity, then the module
will become defective and must be replaced.
Front Connector
Assignment
Encoder Supply
(1L+, 1M)
Wiring the FM 351
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