SMAC CBC-EIP, User Manual, Page: 10 / 42

10
Abnormal
operation Abnormal
STO ACTIVE 0 1 Disabled 0 Drive cannot start or
provide power to the
motor. STO trip reported to
MCU. If this persists for
latching time the STO will
lock in FAULT state. To
reset this fault a power
cycle is needed (T
off
> 3.2
s).
0.6 s < T
Latching
< 2.6 s
Abnormal
STO ACTIVE 1 0 Disabled 0
STO FAULT x x Disabled AND
(STO1,
STO2)
After exceeding latching
time of abnormal STO the
driver will stay latched in
this state until power
cycle (T
off
> 3.2 s).
2.1.3 I/O and STO electrical schematics
For the purpose of interfacing I/Os and STOs between the CBC-EIP and external devices,
electrical schematics are given in
Figures 2.5 – 2.8.
Figure 2.5. Digital inputs electrical schematic.
+3.3 V
GPI_COM
GPI1
10K Ω
10K Ω
10K Ω
(5 – 24 VDC)
(5 – 24 VDC)
(5C – 24 VDC)
(5 – 24 VDC)
To
μ
C
10K Ω
GPI2
GPI4
GPI3
To
μ
C
To
μ
C
To
μ
C
Internal to CBC