ETC SineWave Power Module (DMX) - Manual (Page 15)

IES PowerModule Operators’ Manual v1.4 Isine 15
8. Fault finding
8.1 Reported faults
8.1.1 No load (control present but no output)
This can be reported if either a load fails (lamp
blows without shorting the output first), or the load is
disconnected in error, or a load is not connected.
8.1.2 Short circuit
This can happen if a lamp filament blows, or if a
faulty cable or luminaire is connected to the circuit. A
temporary short circuit such as a lamp failure will
produce a SHORT report in the log, but the dimmer
will usually reset to normal operation when the fault
has cleared. If the fault continues, the report will
change to DISABLE. Disconnect the dimmer and
check the circuit wiring and connected loads for the
short.
8.1.3 Over temperature
If one of the Isine modules exceeds an operating
temperature of 80°C, the dimmer will switch off and
report an overtemperature condition. This can be
caused if the ventilation is obstructed (e.g. the
dimmer is resting on the floor and is being used
continuously at full load).
Note: As the temperature rises above the normal
operating ceiling of 60°C, the dimmer
automatically takes progressive
temperature reducing actions such as
dynamically adjusting the filtering.
8.1.4 Overload
The dimmer will respond quickly to any error which
demands a higher current than expected, for
example 4kW plugged into a 2.5kW dimmer. The
dimmer will automatically switch off and after 3
seconds will attempt to fade up the circuit again. If
this process fails 3 times, the dimmer will report an
overload and will disable until the fault is cleared and
the dimmer reset.
8.1.5 Control
The control fault indicates a problem controlling the
load within the dimmer. This can result in the
dimmer channel giving a full output under any
control condition, and can only be repaired by an
exchange of Isine module. However, if this fault
occurs the dimmer circuit should be carefully
assessed to find a cause before another module
suffers the same problem. Typical system problems
are high voltage spikes caused by an unbalanced
generator supply.
8.1.6 Voltage out of range
If the supply voltage varies above or below the
nominal voltage anticipated (and set as the
benchmark) the dimmer will close down and report a
voltage error. In the case of temporary supply
fluctuations, the fault will auto-reset, but if the
dimmer shuts down, the first point to check is the
voltage calibration setting of the dimmer to make
sure it is set to the local supply voltage.
8.1.7 Disable
If a fault persists beyond a default auto-reset time,
the dimmer will close down awaiting manual
intervention and reset. Check the fault log to see the
type of fault which caused the dimmer to disable.
8.2 First line maintenance
This check list provides initial assistance in the case
of a problem which has not been identified and
reported by the dimmer’s own software.
8.2.1 LCD display blank
Check all power supply connections. Check
module’s RCBO or MCB is on.
8.2.2 LCD display corrupted
Switch off and on again. If the fault persists, open
the module and check all connections, and that plug-
in ICs are secure in their sockets.
8.2.3 No output from one channel
Check the control signal is active. Check the DMX
address is correct. Check there is no ‘l’ showing on
the output screen. Remove the itec module and
check the internal 15A fuse.
8.2.4 RCBO trips continuously
Unplug all load plugs. If the fault persists, refer to
service technician. If the RCBO holds in, replace
one plug at a time until the RCBO trips again. Check
the circuit (cables, plugs and sockets, distribution,
lights) for a loose terminals, a phase to neutral short,
a phase to earth short or a neutral to earth short and
correct where necessary.
8.2.5 Dimmer output is full on all the time
Disconnect the DMX cable to isolate control. If the
dimmer is still on, check a) the MANual level has not
been set to 100%; b) the dimmer curve has not been
set to ‘Inverted’; c) the MIN level is at zero. If the
dimmer is still on, and there is no ‘Control’ fault
identified, refer to a service technician.
If the dimmer switches off when the DMX cable is
removed, check that both NON-DIM mode
selections (dimmer curve and Channel Configuration
I/O) are set to OFF. If either or both these functions
are set ON, the dimmer will be operating in Non-Dim
mode.