0V 24V0V 24V
*
XS2so
Solid State Safety
Output Module
XS26-2
Base Controller
Power
Supply
Power
Supply
#1 #2
Power
Supply
0V 24V
24V
0V
*
Functional Earth
(optional)
Preferred 0V routing plan when a single power supply is used
Preferred 0V routing plan when separate power supplies are used
+/- 30V peak
*
Local 0V
Common
Local 0V
Common
The voltage for all safety input devices (including all Input Expansion Modules)
should be measured in reference to the 0V terminal of the Base Controller
0V
24V
24V
0V
0V
24V
XS2so
Solid State Safety
Output Module
(limited isolation)
XS26-2
Base Controller
Figure 33. Wiring Diagram—Recommended Grounding
7.8.2 Safety Relay Outputs
XS/SC26-2 Expansion Safety Relay modules and the SC10-2 have isolated redundant relay outputs that can be used to
control/switch a wide range of power characteristics (see
XS/SC26-2 Specifications
on page 16 and
SC10-2 Specifications
on page 18). Unlike a solid-state Safety Output, within an output module an individual safety relay output (Mx:ROx)
functions as a group and cannot be split.
The Safety Relay Outputs are controlled and monitored by the XS/SC26-2 Base Controller or the SC10-2 without requiring
additional wiring.
For circuits requiring the highest levels of safety and reliability, when used in pairs (two N.O.), either Safety Output must be
capable of stopping the motion of the guarded machine in an emergency. When used individually (a single N.O. output),
fault exclusion must ensure that failures cannot occur that would result in the loss of the safety function, for example, a
short-circuit to another safety output or a secondary source of energy or voltage. For more information, see
Single-channel
Control
in
Safety (Protective) Stop Circuits
on page 55 and
Fault Exclusion
on page 27.
XS/SC26-2 and SC10-2 Safety Controllers
52 www.bannerengineering.com - Tel: + 1 888 373 6767
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