Type 2 Digital Input Modules - Siemens SIMATIC S5-115F User Manual

S5-115F Manual

10.9.4 Type 2 Digital Input Modules

Type 2 DIs have the following characteristics:
• Safety-related
• Intermittent input signal
• They are operated in subunit A and B (two-channel configuration) and must have the same
module address in both subunits.
Figure 10-7 shows the connection of single-channel sensors
Subunit A
DI
430 - 7LA
435 - 7LC
436 - 7LC
. . .
Sensor Sensor
P
Figure 10-7. Type 2 DI, Safety-Related, Intermittent: Single-Channel Sensor
Permissible modules
Module
430-7LA DI
435-7LC DI
436-7LC DI
EWA 4NEB 811 6148-02
. . .
failsafe 32 *
failsafe 8 * 115 V, not connected to common 0 V
failsafe 8 * 230 V, not connected to common 0 V
Rules Governing the Use of the S5-115F
Subunit B
DI
as in
subunit A
. . .
Characteristics
24 V, connected to common 0 V
potential in groups of 8, P input
potential
potential
10-19