PG DRIVES TECHNOLOGY NEWVSI TECHNICAL MANUAL – DIAGNOSTICS
SK80151-1 55
3.10 Trip Type 10 - High Battery Voltage
This occurs when the controller detects that the battery voltage has risen above 35V. The most common reasons for this are
overcharging of the battery or bad connections between the controller and the batteries. Check the batteries and the
connections to them.
If the trip is still present after the batteries and connections have been checked, then the controller may be defective. Refer to
Section 5.
3.11 Joystick Displaced at Power-up
The most common cause of this trip is if the joystick is deflected away from center when the controller is being switched on. When
the controller is switched on, the battery gauge will blink for a short time. Check that the user is not deflecting the joystick before
the blink finishes.
If the problem persists, refer to section 3.7.
3.12 Timed Foldback Active
This occurs when the controller is in ‘Timed Foldback, i.e. the current has been reduced in order to protect the motors.
Check the motors are in good condition and are allowed to rotate freely. In particular, check the brakes are releasing fully.
3.13 Controller in Sleep Mode
This condition is indicated by the Status Indicator "blinking on" once every 2.5 seconds. It is not a trip condition, but an indication
that the controller has gone to sleep.
To awake the system, switch off and on again.
3.14 High Temperature
This occurs when the controller is in ‘Thermal Foldback, i.e. the current has been reduced in order to protect the controller. There
are two trip codes associated with this condition.
7821 – The current has been reduced.
7825 – The current has been cut completely
Check the motors are in good condition and are allowed to rotate freely. In particular, check the brakes are releasing fully.
4 Basic Tests
After a repair has been completed, the following tests should be carried out. These are minimum recommendations, depending
on the nature of the original trip, additional tests may be required.
These tests are a minimum recommendation only. It is the responsibility of the service person(s)
to perform other tests relevant to the original trip and wheelchair type. Refer to the wheelchair’s
Technical Manual for exact information of other tests. PGDT accept no liability for losses of any
kind arising from failure to carry out of the described tests, or from not carrying out additional
relevant tests.
These tests should be conducted in an open space and a restraining device such as a seat belt
should always be used. PGDT accepts no liability for losses of any kind arising from failure to
comply with this condition.
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