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Instruction manual – AP901 Arc Protection Unit
10 (39
)
A1017B
3.2
LED
O
PERATION
Q
UICK
G
UIDE
LED
OFF
STEADY
ON
BLINKING
ACTION IF
ABNORMAL
POWER
Blue
Auxiliary supply
disconnected
Auxiliary power
connected
N/A
Check the power source
ERROR
Red
System healthy
System failure
Configuration
mismatch. Protection
partly operational
Verify system condition. see
chapters 11: Troubleshooting
guide and 5: System self-
supervision
T1,T3,T4
Red
Normal status
Trip relays
T1,T3,T4
activated
N/A
Check the reason for trip. Clear
the fault and reset indications
by pushing SET button
T2, T4
Red
Normal status
Trip relays T2,
T4 activated
N/A
Check the reason for trip. Clear
the fault and reset indications
by pushing SET button
S1
Amber
Normal status
Sensor channel 1
activated by light
information
Sensor channel 1
loose connection or
system set-up not
performed; also
activated by pressure
information
Check why sensor activated or
check the sensor wire
connection or perform system
set-up (see chapter: 3.3.1
S2
Amber
Normal status
Sensor channel 2
activated by light
information
Sensor channel 2
loose connection or
system set-up not
performed; also
activated by pressure
information
Check why sensor activated or
check the sensor wire
connection or perform system
set-(see chapter: 3.3.1
S3
Amber
Normal status
Sensor channel 3
activated by light
information
Sensor channel 3
loose connection or
system set-up not
performed; also
activated by pressure
information
Check why sensor activated or
check the sensor wire
connection or perform system
set-up (see chapter: 3.3.1
S4
Amber
Normal status
Sensor channel 4
activated by light
information
Sensor channel 4
loose connection or
system set-up not
performed; also
activated by pressure
information
Check why sensor activated or
check the sensor wire
connection or perform system
set-up (see chapter: 3.3.1
S5
Amber
Normal status
Fiber sensor
channel activated
Fiber sensor loose
connection or system
set-up not performed
Check why sensor activated or
check the sensor continuity or
perform system set- (see
chapter: 3.3.1
BI1
Amber
Normal status
Binary input 1
activated
Binary input 1 loose
connection
Check the binary input wiring.
BI2
Amber
Normal status
Binary input 2
activated
Binary input 2 loose
connection
Check the binary input wiring.
BO1
Amber
Normal status
Binary Output
activated
N/A
Table 3-1: LED operation quick guide