Instruction manual – AP901S Arc Protection Unit
11 (43
)
A1027A
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 Auto configuration (system
setup)
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 Auto configuration (system
setup)
Table 3-1: LED operation quick guide
3.3
P
USH
-
BUTTON DESCRIPTION
AP901S contains one single push-button (SET) that can be used for all operational functions
of the unit. The push-button is utilized for auto-configuration of the system (see chapter 3.3.1)
and for resetting the indicators and latched output relays.
3.3.1
A
UTO CONFIGURATION
(
SYSTEM SETUP
)
When all sensors and binary lines have been connected an auto-configuration procedure must
be executed. The initialization sequence is performed by pressing the “SET”-button for 2
seconds, and the AP901S sensor LEDs and all binary LEDs start blinking. The unit scans
these inputs to see if they are connected and when input is detected the corresponding LEDs
are lit up to mark that a connection was found. The inputs without connection continue blinking
during the remaining 3 seconds. After total time of 5 seconds, all LEDs are turned off. During
this system setup the dipswitches setting are also stored in non-volatile memory.
All sensor inputs will remain operational even when not auto-configured. The auto-
configuration is only used for self-supervision purposes.
Note: in order to redo auto-configuration for a unit containing less connections (binary
inputs/outputs or sensors) than in previous memorized set-up a dipswitch (anyone) must be
moved back and forth prior to performing auto-configuration. Timeout allowing new
configuration is 1 minute. Reconfiguration with more connections is allowed without moving
the dip-switch.
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