Festo — CMMT-ST-C8-1C-...-S0 — 2021-04b
Installation
29
[X2]
Pin
Function
Description
Mating plug
labelling
1
–
–
1
2
MA+
Clock line BiSS C, output
2
3
SLO+
Data transmission line BiSS C,
input
3
4
+5 V
5 V encoder supply
4
5
–
–
5
6
MA–
Clock line BiSS C, output inverse
6
7
SLO–
Data transmission line BiSS C,
input inverse
7
8
GND
Reference potential of encoder
supply
8
Tab. 20: Absolute encoders with BiSS C protocol
Mating plug requirements
Identifier
based on Phoenix Contact DFMC 1.5/4-ST-3.5
included in assortment of plugs NEKM-C-22
(enclosed with the product)
Number of pins
8
Nominal current
8 A
Pitch
3.5 mm
Strip length
10 mm
UL Use Group
D
Tab. 21: Mating plug requirements
Requirements for the connecting cable
Shielding
Not required but twisted in pairs
1)
Min. cable cross section
2)
0.2 mm
2
Max. conductor cross section
1.5 mm
2
Max. length
25 m
1) Festo screened cables can be used. The shield can only be connected on the motor side.
2) The conductor cross section used must be suitable for the expected currents. If flexible flying leads are used with plastic wire end
sleeves, minimum cross sections of 0.14 mm² are possible.
Tab. 22: Requirements for the connecting cable
