Trouble-Shooting Guide - Meta System HF TOP LINE 910 Bedienungsanleitung

3 - Dip Speed
This function has been included for use with loads that create brief and repeated sags (e.g. laser
printers). When this function is activated, by-pass intervention is delayed by 10 ms, permitting
the UPS to overcome brief sags without tripping the by-pass. The output voltage of the UPS will
be slightly lower during the brief period of the sag (without jeopardizing the operation of any
equipment connected). This function is normally enabled.
4 - Extended PLL lock range
This function makes it possible to extend the lock range of the mains frequency from ±2% to
±20% (advisable when operating with power supply from generating sets). This function is
normally not enabled.
5 - Load Waiting Mode
The UPS can be configured to operate in "Load Waiting Mode" (LWM). This feature permits
automatic switch-on and switch-off of the UPS in correspondance to the switch-on of the load
connected. This makes it possible to reduce the period of operation of the UPS to the time strictly
necessary for the function of the connected load (even when these are managed by automatic
switch-on/off procedures). When the on/off switch is pressed, the UPS goes into stand-by,
supplying the output directly from the mains through the by-pass; in this status (indicated by the
flashing of the yellow BY-PASS LED), the batteries are recharged if necessary. If at this point
there is absorption at the output (a load is switched on), the ensuing increase in current is
detected by the microprocessor, which starts the switch-on procedure, activates the inverter, and
switches by-pass to the normal position once the initial spike has terminated. Switching off the
load restores the UPS to stand-by, where it awaits a new switch-on (if there is a blackout during
the load waiting status, the internal microprocessor automatically switches off the UPS and
switches it on again when mains current is restored. This protects the batteries from unnecessary
discharge). It is possible to programme the threshold of load absence recognition using the UPS
LINK monitoring software supplied with the UPS and a computer with WINDOWS operating
system (see the specific description). This function is normally not enabled.
6 - 60 Hz Operation
The UPS can be configured to operate with line voltage at 60 Hz. This function is normally not
enabled.
Problem
• When the UPS is switched on, the buzzer
beeps and the red PROTECTION LED flashes
alternately short-long and then goes off after
15 seconds.
• The UPS operates but beeps briefly every 12
seconds and the yellow BATTERY LED
remains on.
• The UPS operates but beeps intermittently
and the red OVERLOAD LED + yellow
BYPASS LED flash.

TROUBLE-SHOOTING GUIDE

Solution
- Incorrect connection of the neutral conductor.
Rotate the power plug or invert the direction of
the connection of the neutral and phase input
cables, or exclude the neutral sensor.
- Make sure that there is voltage at the mains
supply output.
- Check that the power cable of the UPS is
connected securely to the mains supply outlet
and to the connector of the UPS itself.
- Check the fuse situated next to the I/O
connector under the plastic cover (see Figure 1
or 4).
- There is an overload on the UPS output. Reduce
the number of appliances connected so that the
load does not exceed the maximum power that
the UPS can deliver. Alternatively, if the UPS is
not already in the maximum configuration, you
can increase the UPS power by adding one or
more modules (PW 1000) inside the UPS.
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