User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher
Page
230
RTU Troubleshooting
Symptom Probable Cause Remedy
Cannot
communicate
with the RTU
PC not connected to the
RTU
Connect the PC/RTU communications cable between the PC
and the RTU.
RTU not powered Connect power supply and ensure power status LEDs are
energised.
Wrong Toolbox
communications port setup
Check the Toolbox communication port parameters in
Configuration, PC Setup. These must be the same as the
RTU's port parameters. Try View, Auto Detect.
RTU sleeping or in an
unknown state
Power down RTU, remove battery link, wait up to 10 minutes
for the RAM to clear and try again.
Ladder Logic will
not run
Old version of ladder logic
in the RTU
Compile the ladder logic and download it again.
Ladder logic was not
downloaded into the RTU
Compile the ladder and download it into the RTU.
RTU not
Powered
No AC/DC and battery flat
or not connected
Check the AC or DC source and the battery. If the battery is
faulty then replace it with a fully charged battery.
Power supply installed or
wired incorrectly
Check if the PC-1 or PS-xx is plugged firmly into the
backplane and wired up correctly. If OK, try a replacement
PC-1 or PS-xx.
AC OK and Battery is flat Check cable connections to the RTU. Is there a device that
continuously drains the battery when the AC and RTU are
switched OFF?
PC-1 charge
and discharge
LEDs are
flashing
Battery voltage is at least
0.5V less than the 12V
supply input causing more
than 1A current to be
drawn
by the battery.
Irrespective of the charge and discharge LEDs, if the battery
voltage is less than the 12V supply, the battery will be
charging. Once the battery charges to a level that it draws
less than 1A the flicker will disappear.
Analog input
readings
incorrect
Analog link wrongly
configured
Check link is on for 4-20mA and off for 0-20mA.
Analog output
readings
incorrect
Analog link wrongly
configured
Check link is on for 4-20mA and off for 0-20mA.
Incorrect load Check that load is correct (250 ohms = 1-5V).
No 24V Aux
output
Power saving enabled Disable RTU's power saving feature.
RTU not fitted with a 24V
converter
Ensure that the RTU is fitted with a converter (optional).
Digital output
fuse indicator on
Digital output common
incorrectly wired for DC.
Check Hardware Manual or module terminal cover for correct
wiring.
One or more
modules
periodically
disappears from
hardware
overview
Incorrect backplane
terminator settings
Incorrect I/O Modules List
configuration
Check terminator settings and adjust for the required
backplane arrangement. Please see the Hardware Manual or
backplane labels for details.
Fix IO Modules List configuration.