P/N 133487
29
Banner Engineering Corp.
•
Minneapolis, U .S .A .
www .bannerengineering .com • Tel: 763 .544 .3164
SC22-3 Safety Controller
Instruction Manual
System Installation
1A
1B
2A
2B
3A
3B
SO1
SO2
SO3
1A
1B
2A
2B
3A
3B
FSD
FSD
FSD
+24V dc
+24V dc
Input Terminals
SC22
Safety Stop
Circuit
Single-Channel
Dual-Channel
Safety Stop
Circuit
Single-Channel
Dual-Channel
WARNING . . .
Use of Transient
Suppressors
Transient suppressors are
recommended. They MUST be
installed across the coils of the FSDs.
NEVER install suppressors directly
across the contacts of the FSDs. It
is possible for suppressors to fail
as a short circuit. If installed directly
across the contacts of the FSDs, 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.
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.
Figure 3-12. Generic hookup showing 1-channel, 2-channel, and no EDM options
This figure is generic in nature and represents all three EDM options:
• Safety Output SO1 is shown with NO EDM configured (typically used with self-
monitored devices).
• Safety Output SO2 is shown with Two-Channel EDM configured.
• Safety Output SO3 is shown with One-Channel EDM configured.
Any particular Safety Controller configuration may use any combination of external
device monitoring options, depending on the application.
See Section 3.6.1 on external device monitoring and Section 3.6.3 on interfacing
safety stop circuits.