SI-Safety Installation & Operating Manual
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Issue number: 1
Saf
ety
Devi
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safety
Inst
all
SI-Safety module
S
M
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SI-Safety
En
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Enc
oder
Am
endment
Index
1.17
Avoiding malfunction during loss of zero volts
To avoid accidental voltage errors at a safe output, the output circuit must always be
returned to the inverter 0 V terminal, and not to a 0 V connection elsewhere in the
system. If the safe output is not directly connected to the drive SAFE TORQUE OFF
then the following basic circuit should be used.
Figure 1-1 Loss of zero volts protection
1.18
Operation and service
Before installing and removing a module, or disconnecting signal lines, first isolate the
module electrically, i.e. shut it down.
While installing and removing a module, take appropriate precautions to prevent
electrostatic discharge on the externally routed terminals and plug connections.
1.19
Transportation / storage
Instructions regarding transportation, storage and proper handling must be followed.
Climate specifications must be observed in accordance with Table 8-1 on page 57.
0V
SI-Safety Module
Safe output
Load - for example relay coil
Return point
for output
circuit
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