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ControllerE Hardware Troubleshooting Guide
This guide is designed to aid the reader in troubleshooting common errors on an AS-i system
through the use of the LED indications on the controllerE AS-i master.
Fig. 1: LED indications on the ControllerE
Step 1.
Is the 24V PWR LED On?
24 VDC power is needed to supply power to the ControllerE AS-i master.
LED Indication
Solid Green
Description
24 VDC is applied to the ControllerE
No LED
Move to step 2
24 VDC power is not present
Possible causes
In the process of wiring the 24 VDC
power supply, the + and – terminals
1. Verify that the 24 VDC power supply were reversed between the 24 VDC
is working correctly.
power supply and the ControllerE.
2. Ensure connections are properly
made from the 24 VDC power
supply to the ControllerE
Step 2.
Is the PWR/COM LED On?
The PWR/COM LED indicates that AS-i power, which is required to couple and decouple data on the network, is present and that the modules are communicating on
the network.
LED Indication
Solid Green
Flashing Green
No LED
Step 3.
Description
AS-i voltage is present and at least one
module is detected on the network.
Possible causes
Moved to step 3
AS-i voltage is present, but no modules
are detected.
During installation, 24 VDC and AS-i
power were wired directly to the
same terminals inside the cabinet.
1. Verify that modules are connected to This will cross the power supplies
the yellow network cable.
and disrupt communication on the
2. Verify that the main trunk of the
AS-i network.
yellow network cable is wired
correctly to the AS-i power supply.
3. Verify that 24 VDC is not connected
to the yellow network cable. Only
the AS-i power supply should be
connected to the network cable.
AS-i voltage is not present
A common misstep is to wire the AS-i
+ and – to the 24 VDC + and –
1. Verify that the AS-i power supply is terminals on the controllerE.
working properly.
2. Verify that the AS-i power supply is
wired properly to the AS-i master.
Is the Proj LED on?
The Proj LED indicates whether the controller is in Protected mode or Configuration
mode.
Protected Mode A text message is displayed on the ControllerE LCD screen when
an error occurs. Configuration of the controller is not possible in this mode.
Configuration Mode Configuration of the system is possible in this mode.
However, when an error occurs, a text message is not displayed on the ControllerE
LCD screen.
LED Indication
Solid Amber
Description
Configuration Mode is active
If the configuration of the system is
complete, change to the protected mode
and move to step 4.
Possible causes
Flashing Amber
Configuration mode is active, but change
over to the protected mode is not
possible as a module with the address 0
is connected.
All new modules come with an
address 0 from the factory. It is
possible a new module was added to
the network without being addressed.
1. Verify the address of all the
connected modules.
2. If an address 0 is found, it must be
changed to an available address and
the system must be re-configured.
Protected Mode is active.
No LED
Move to step 4.
Step 4.
Is the CONF/PF LED On?
The Conf/PF LED indicates an error on the AS-i system.
List of Detected Slaves (LDS) List of all addressed modules that are physically
detected on the network. This is what the master sees on the network.
List of Projected Slaves (LPS) List of all addressed modules that are currently
configured for the network. This is what the AS-i master expects to see on the
network.
LED Indication
Solid Red
Flashing Red
Description
Possible causes
Configuration fault: projected and current Additional inputs are needed and a
configuration do not match.
module with address 20 is added to
expand the system. Address 20 will
1. Compare the LDS and LPS. If the
not appear in the LPS until a reprojected and detected list do not
configuration is carried out. However,
match, make the appropriate
it will be detected in the LDS. The
changes and re-configure the
Conf/PF LED will show a solid red
system.
because the LPS configuration does
2. Verify that the field modules are
not match the LDS configuration. A
properly seated in the module
re-configuration of the system is
bases. Look for a green power light necessary.
on the modules.
3. Check for loose wiring on the
cabinet modules and cables.
4. Check the AS-i power supply for
proper jumper placement
A periphery fault is detected on at least Field wirable connectors are
one connected module.
generally used for applications where
exact length cords are desired. It is
Check for short circuit/overload
necessary to wire the +, -, and signal
conditions on the sensor inputs or loss of wire to the terminals of the field
AUX 24 VDC power on the listed
connector. If the signal wire is
modules.
incorrectly wired to the negative
terminal instead of the signal
terminal, the result is a short circuit
on the input.
No LED
Projected and current configuration do
match
No configuration error. Move to step 5
Step 5.
Is the PLC Run LED On?
The PLC Run Light indicates whether a program is running in the PLC
LED Indication
Solid Amber
Description
PLC Program is running
Flashing Amber
PLC Program is not running
Possible causes
A file was downloaded to the
controllerE but the program was not
Set the PLC program into Run mode if a set to “Run”.
program is necessary for the system.