Sentry DCC02 Installation And User Manual page 32

System Commissioning - Powering Up System Commissioning - Powering Up
Powering Up (cont..)
If the system has powered up correctly, there will be no further beeps. However, if
there is a problem, the system will emit error beeps and flash an error code on the
STATUS LED. These issues MUST be resolved before the system can enter limit
programming. Two possible situations could exist post power-up:
These system errors can be resolved by working through the "Troubleshooting"
section on page 44. However the following quick checks can be performed:
MAINS FAILURE: Check inline fuse on the supplied mains lead. If blown,
replace with a 1 AMP SLOW BLOW glass cartridge fuse.
COMMUNICATIONS FAILURE: Check if there is power on the head unit by
removing the cover and seeing if the STATUS LED on the PC board flashes
(see below), if not, measure the two outer terminals of the interconnecting
cable with a multi-meter. The reading should be 25-29V DC. If no voltage is
present, check the main fuse on the wall console designated F2. Replace if
blown. If this fuse continues to blow, check the interconnect lead orientation,
and especially the wiring if you have extended the lead.
When F2 blows on the wall console, it is generally indicative of a short
circuit on the DC supply. Replacing this fuse with a fuse of higher rating
can cause a fire, serious burns and severe product damage, which is not
covered by warranty. If in doubt, please call Technical Support.
x 2 - two low-frequency beeps! This indicates MAINS FAILURE
x 4 - four low-frequency beeps! This indicates
COMMUNICATIONS FAILURE!
STATUS
Indicator
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This STATUS indicator
flashes continuously during
normal operation, indicating
that communication is taking
place between the wall
console and the motor unit