Simplex 4007ES - IDNAC Troubleshooting and Indicator LEDs

4-9
Chapter 4 IDNAC Power Supply
Troubleshooting
Troubleshooting The code produced by the lit yellow indicator LEDs corresponds to a trouble that is either
occurring on the System or on the SLC Channels. See Table 4-10 for the 4007ES LED
definitions and Table 4-11 for the LEDs and their codes.
IDNAC Channel troubles are indicated by yellow LEDs labeled IDNAC TBL and letters A to
D. When the IDNAC TBL LED is lit, the IDNAC Channel is experiencing a trouble. Refer to
Table 4-1 for the trouble codes for LEDs A to D. The LED SCROLL pushbutton can be used to
scroll through multiple trouble indicators.
Table 4-10. 4007ES Indicator LEDs.
SLC Channel
Trouble LED
Codes
SLC Channel troubles are indicated by LEDs A to D, as well as IDNAC. Refer to Table 4-11
for the description of the LEDs.
LED: A, B, C, D Signal various trouble conditions
on the 4007ES and its SLC.
Refer to Table 4-11 and
Table 4-12 for troubles details
Figure 4-5. LEDs on the 4007ES Power Supply
IDNAC TBL When On steady, refer to Table
4-11 for detailed troubles
indicated by LEDs A-D
LED COMM Loss Indicates that the communica-
tion between the IDNAC power
supply and the CPU is lost
Scroll Push
Button (SW1)
Used to scroll through multiple
troubles, since only one trouble
can be displayed at a time.
A
B
C
D
Comm Loss
IDNAC TBL
LEDs
Scroll push
button (SW1)
Table 4-11. SLC Channel Trouble LED Codes
IDNAC A B C D
Description:
IDNAC Channel Fail: The channel is not responding.
IDNAC Short Circuit: There is a short circuit on the channel.
IDNAC Duplicate Device: There are 2 devices on the channel
that have the same address.
IDNAC Missing device: There is a device programmed on the
channel that it cannot detect.
IDNAC Extra Device: The channel is detecting the address of
a device that has not been programmed.
IDNAC Wrong Device: The channel is detecting a device that
had been programed as the wrong “type”.
IDNAC Controller Fail: The channel can no longer detect the
controller.
IDNAC Address Out of Range: There is a device with an
unsupported address on the channel.
IDNAC Isolator Trouble: An isolator on the channel is open.
IDNAC Overcurrent: A device on the Channel is drawing too
much current.
IDNAC Earth Trouble: There is a positive or a negative earth
fault on the channel.