24
P/N 69761 rev. B
Banner Engineering Corp.
•
Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
PICO-GUARD Controller
Instruction Manual
4.5.7 Non-Safety Outputs
Auxiliary Output:
The action of the Auxiliary output “follows”
the action of the OSSD outputs. See Figure 4-4 for Auxiliary
output operation. The Auxiliary output is a light-duty, 24V
dc, solid-state output used for control functions that are
not safety-related. A typical use is to communicate with a
programmable electronic system (PES), such as a PLC. See
Section 2.7 for output specifications.
Weak Signal Output:
The Weak Signal output is ON when
one or more of the optical channels has a weak signal. See
Figure 4-4 for Auxiliary output operation and see Section 4.4
for Optical Channel Indicators. The Weak Signal output is a
light-duty, 24V dc, solid-state output used for non-safety-
related monitoring of the optical channels. A typical use is to
communicate with a programmable electronic system (PES),
such as a PLC, that a low signal condition exists. See Section
2.7 for output specifications.
Fault Output:
The Fault output is ON when a Lockout condition
exists due to an internal or external PICO-GUARD system
error or fault. See Figure 4-4 for Auxiliary output operation
and see Section 5 for resolution of error/fault conditions. The
Fault output is a light-duty, 24V dc, solid-state output used
for system monitoring functions that are not safety-related. A
typical use is to communicate with a programmable electronic
system (PES), such as a PLC, that a fault has been detected
and a Lockout condition exists. See Section 2.7 for output
specifications.
Figure 4-4. Operation of non-safety outputs
Channel Outputs:
(Optional, see Section 2.1 for models
with Channel outputs). The four Channel outputs (Ch1, Ch2,
Ch3, Ch4) are ON when the corresponding optical channel is
blocked/open. See Figure 4-4 for channel output operation
and see Section 4.4 for optical channel indicators. A typical
use is to communicate with a programmable electronic
system (PES), such as a PLC. See Section 2.7 for output
specifications.
System
Status
Aux.
Output
Weak
Output
Fault
Output
Ch1
Output
Ch2
Output
Ch3
Output
Ch4
Output
Power-
up
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Run
ON
(1)
OFF
OFF
OFF
OFF
OFF
Stop
OFF
(1)
OFF
(2)
(2)
(2)
(2)
Latched
OFF
(1)
OFF
(2)
(2)
(2)
(2)
Lockout
OFF
OFF
ON
OFF
OFF
OFF
OFF
(1) ON if any channel has a weak signal
OFF if all channels have either no signal or strong signal
(2) ON if the channel is blocked/open
OFF if the channel is clear/closed
System Operation
