turck BL20 Series - 7.8.2 Base modules; 7.8.3 Wiring diagram

73
2020/09
7.8.2 Base modules
 with tension clamp connection
BL20-S4T-SBBS
 with screw connection
BL20-S4S-SBBS
7.8.3 Wiring diagram
IN
SC
switch-on threshold 6.2 mA
switch-off threshold 5.9 mA
Isolation voltage
U
TMB
(module bus/ field) 2500 VDC
U
FE
(field supply/ FE) 1000 VDC
Fig. 77: Base module BL20-S4T-SBBS
Fig. 78: Wiring diagram BL20-S4x-SBBS
Technical data
23
22
21
13
12
11
2414
2111
++
++
--
--
Bit 0
Bit 1
Bit 2
Bit 3