32
P/N 133487
Banner Engineering Corp.
•
Minneapolis, U .S .A .
www .bannerengineering .com • Tel: 763 .544 .3164
SC22-3 Safety Controller
Instruction Manual
System Installation
CAUTION . . .
Shock Hazard
Always disconnect all power from the Safety
Controller and the guarded machine before
making any connections or replacing any component. Use
extreme caution to avoid electrical shock at all times. Serious
bodily injury or death could result.
WARNING . . .
Proper Wiring
The generalized wiring configurations shown
are provided only to illustrate the importance of
proper installation. The proper wiring of the Safety Controller
to any particular machine is solely the responsibility of the
installer and end user.
0V dc
S3
S4
Y3
Y1
13
23
33
Feedback (optional)
* Installation of transient (arc) supressors across the coils of MPCE1 and MPCE2
is recommended (see Warning)
Y4
Y2
14
24
34
S1
S2
K2
K1
Machine
Control
MPCE
2
MPCE
1
IM-T-9A
Input Terminals
SC22
*
*
1A
1B
2A
2B
3A
3B
A2
SO1
SO2
SO3
+24V dc
Figure 3-15. One-channel EDM hookup to IM-T-9A interface module
The IM-T-9A interface module depicted in this figure is shown in one-channel
EDM hookup. The IM-T-11A module is connected in a similar manner.
Depending on the application, each safety output requires a separate and
individually wired IM-T-..A module.
See Section 3.6.1 on external device monitoring and Section 3.6.3 on interfacing
safety stop circuits.
WARNING . . .
Use of Transient
Suppressors
Transient suppressors are
recommended. They MUST be
installed across the coils of the
machine control elements. NEVER
install suppressors directly across
the contacts of the MPCEs. It is
possible for suppressors to fail as
a short circuit. If installed directly
across the contacts of the MPCEs, a
short-circuited suppressor will create
an unsafe condition.
WARNING . . .
OSSD Interfacing
To ensure proper
operation, the Safety Controller
output parameters and machine
input parameters must be considered
when interfacing the solid-state
safety outputs to the machine inputs.
Machine control circuitry must be
designed so that:
• The maximum cable resistance value
between the Safety Controller solid-
state safety outputs and the machine
inputs is not exceeded,
• The Safety Controller’s solid-state
safety output maximum Off state
voltage does not result in an ON
condition, and
• The Safety Controller’s solid-state
safety output maximum leakage
current, due to the loss of 0V, will not
result in an ON condition .
Failure to properly interface the
safety outputs to the guarded
machine could result in serious
bodily injury or death.