OTOLIFT 87, Functionality & Troubleshooting

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5. Bypass-connectors and interconnections on the PCB
5.1 Bypass-connectors
When you want to move an incomplete or defect lift you need the Bypass-connectors.
They are attached to the service-box.
Connect the 4 pole connector to x15 (bypass) and the 2-pole to x3b (limit)
With these connectors you will be able to override all safety-contacts, except for the endswitches.
Activation of override is done, by holding the red C button on the service box.
When you disconnect the Bypass, do not forget to put jumper back to X3b (see chapter 5.2)
Programming can not be done when this connector is connected.
When connected and activated, the lift moves with a maximum of 5cm/s. (C38 software or higher)
When bypass is activated, you will not be able to move the lift, by “normal” control.
(armrest or remote). When you try to do this, the display will show (8-8-8-8-11).
(See headline 8888 error mechanic-needed-beep).
If the chair is functioning properly, you can also use the service box without the bypass-connector.
The bypass connector also overrides the overspeed governor safety-contact. (Catch)
5.2 Interconnections on the PCB
Some connectors are not used in the type 87 application.
In this case we use jumpers to make the interconnection.
X3b is standard interconnected by a jumper.
When this interconnection is forgotten the display will show the error 8-8-8-8-y and 2 LED’s will be
off. (see chapter 9.2, LED’s on the PCB)
When no 1 channel receiver, folding rail PCB and/or SENSOR is connected, 2 extra connections
should be made on X7, by using jumpers. See foto.
5.3 Logic of pin-numbers
All pcb connectors are named with an x number.
The x is always positioned at the side of connection 1 / pin-number 1
In the upper foto, the interconnections on X7 are made on pin 3 & 4 and 5 & 6.