22 P/N 69761 rev. B
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
PICO-GUARD Controller
Instruction Manual
USSI 1 Operation: USSI input is used to connect various
external devices or controls to provide a stop signal to
the PICO-GUARD system (see Section 3.7 for installation
requirements). USSI 1 is used when a latching type of stop
response is needed. When a stop signal is received by the
USSI 1 input, the controller will turn OFF the OSSD outputs
within 7 milliseconds (the maximum USSI response time) and
hold them OFF until the USSI 1 stop signal has been removed
(both USSI 1 input channels ON/closed) and a valid USSI 1
Reset is received. After a successful reset of the USSI 1 latch
condition, the controller will resume normal operation.
NOTE: If the OSSD outputs do not turn ON after a USSI 1
reset, check for a USSI 2 stop condition or for an
optical channel open (blocked) or latch condition. The
USSI 1 input must be jumpered if it is unused (see
Section 3.7), and it will have no effect on the operation
of the PICO-GUARD system.
USSI 2 Operation: USSI 2 input is used to connect various
external devices or controls to provide a stop signal to
the PICO-GUARD system (see Section 3.7 for installation
requirements). USSI 2 is used when a trip type of stop
4.5.4 Optical Channel Operation (Auto Power-Up, Trip Output, USSI 1 and 2 Closed or Jumpered)
response is needed. When a stop signal is received by the
USSI 2 input, the controller will turn OFF the OSSD outputs
within 7 milliseconds (the maximum USSI response time).
Once the USSI 2 stop signal has been removed (both USSI 2
input channels ON/closed), the controller will resume normal
operation.
NOTE: If the OSSD outputs do not turn ON after the USSI 2
stop signal is cleared, check for a USSI stop or latch
condition or for an optical channel open (blocked) or
latch condition. The USSI 2 input must be jumpered if it
is unused (see Section 3.7), and it will have no effect on
the operation of the PICO-GUARD system.
4.5.3 System Lockout Conditions
External/Internal Faults
If the PICO-GUARD controller detects a critical fault, the OSSD,
Aux and Weak outputs turn OFF, the Fault output turns ON and
diagnostic information is displayed via the controller’s status
indicators (and the remote interface, if used). See Section 5 for
resolution of error/fault conditions.
NOTES: 1. Green Flicker if an optical channel has a weak signal
2. OFF unless System Reset fault, then Red Flashing
3. OFF unless Optical Channel fault, then Red Flashing
4. OFF unless Configuration fault, then Red Flashing
5. OFF unless OSSD fault, then Red Flashing
6. OFF unless EDM fault, then Red Flashing
7. 2-channel EDM: both indicators ON;
1-channel EDM: EDM 1 indicator ON only
System
Status
Required
Event
Status
Indicator
System
Reset
Indicator
Channel
Indicators
Configuration
Indicator
EDM
Indicators
OSSD
Output
Indicators
OSSD
Outputs
Power-up Apply power
Flash Red
Flash Green
OFF
Flash Red
Flash Yellow
OFF
Flash Red
Flash Green
OFF
Flash Red
Flash Green
OFF
Flash Red
Flash Green
OFF
Flash Red
Flash Green
OFF
OFF
Run
Pass internal
tests and
all optical
channels
clear
Green OFF All Green
(1)
Green OFF Green ON
Stop
One or
more optical
channels
blocked
Red OFF
Red: Blocked/
Open
Green: Clear/
Closed
Green ON
(7)
Red OFF
Lockout
Fault
detected
Red Flashing OFF
(2)
OFF
(3)
OFF
(4)
ON
(6)
OFF
(5)
OFF
System Operation
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