11
Operating instructions
HERMA 400 TROUBLESHOOTING
3.28 US (130519) 141/154
11.2.68 SM917 Drive failure Powerfail
This message appears if power supply of the intermediate circuit falls below a critical point. Please turn
to our Technical Service or to your HERMA partner if this malfunction occurs repeatedly.
11.2.69 SM918 Drive failure
This message appears if during initialization a connection to the motor encoder could not be
established. Please turn to our Technical Service or to your HERMA partner if this malfunction occurs
repeatedly.
11.2.70 SM919 Drive failure Low voltage (peak)
This message appears if there is s short low voltage in the intermiediate circuit.
If this error occurs this means that the drive's load is too high (for a short period of time). Usually
this suggests the label web does not run smoothly. In order to fix the problem take the following
measures at first to have the label transport run more smoothly:
> Clean the entire area of the label web and remove any adhesive residues.
> Make sure the label web is inserted correctly.
> Make sure that all reversing rollers are installed and move smoothly.
> Make sure the label web can run around the dispensing plate easily, i.e., the plate should, for
example, not be sharp-edged.
> Make sure the label sensor FS03 does not press onto the label web too much.
> Check the adjustment of the finger plate cover at the transport roller. The roller must turn
easily.
> Decrease the spring tension of the pendulum at the standard unwinder.
> Adjust, as the case may be, the belt tensioner (drive belt).
> Remove any parts that were installed additionally and affect the feed force of the label web.
> Check if the labelling speed is too high compared to the product speed.
> Check, with corresponding applications, if the vacuum on the vacuum pad is too high.
> Make sure to have installed the latest software version (version 2.04.35, or higher).
All this means that you should take all measures to make the label web run more smoothly.
If these measures are insufficient please contact our service department at +49 (0)711 7702
777. Before, first call up system parameter 992 "Display add. output" and set it to the value of
‚148' (temporary display) or ‚400' (permanent display).
You will receive further instructions over the phone by our service staff.
11.2.71 SM920 Drive failure Overload (peak)
This message appears if the maximum peak current was exceeded. The following may have caused it:
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