Pan/Tilt Head with Multiple Protocol Interface VPT-601 ... - Belcom

5.7 Lens motor voltage
The voltage for the lens motors can be set step-free within a range of 0 ~ 11.5VDC using a potentiometer. The location of the potentiometer R113 and the location of
the two measuring points LP4 and LP5 for voltage measurement are shown in the figure - APPENDIX 1.
6. Local test mode
The pan/tilt functions and the lens and AUX functions can be tested using the text mode without having to be activated using the command bus.
This is achieved as follows:
1. Remove the housing cover facing away from the connection side. The R/D board is now visible.
2. Switch on supply voltage.
3. Select the required function according to the table shown in the figure - APPENDIX 1.
4. Set the number of the required function using rotary control switcher S2.
5. The function is carried out by pressing button S5.
6. The function is interrupted when the button is released again.
IMPORTANT: In the case of the functions marked with * (in APPENDIX 1, page 45), the VPT-601 starts immediately with a possibly fast rotational movement.
The location of the rotary control S2 and the button S5 are shown in the figure - APPENDIX 1.
7. Operation
7.1 Switching ON
Once the system cable has been connected to the supply and command bus, the supply voltage can be switched on. The red LED marked „POWER” on the R/D board
lights up (see the figure - APPENDIX 1). After this, the basic functions can be tested using the local test mode (see section 6.).
A control unit is not necessary for this.
All functions of the VPT-601 can be operated using a connected control unit. The red „RECEIVE DATA” LED flashes briefly upon receipt of each command if the command
bus lines have been connected correctly.
If the VPT-601 does not react, check the following points:
1. Has the supply voltage been connected correctly ?
2. Has the unit address been set correctly ?
3. Has the baud rate been set correctly ?
4. Have the command bus lines been connected correctly ?
7.2 Parameter initialisation
Parameter initialisation has to be carried out when switching on for the very first time and after connecting or exchanging a motor-controlled lens. This is necessary in
order to establish specific basic values and store them in the internal memory of the electronic system.
There are 2 possibilities for parameter initialisation:
1. Either using the local test mode. In this case, set rotary switch S2 to position „F” and press button S5 briefly, or
2. The „INITIALISATION” command has to be received via the command bus.
When initialising, the pan and tilt motors and the connected lens motors are moved in both directions. The process can last several seconds because the zoom and the
focus range of the lens has to be run through twice. All functions are blocked during the initialisation process.
All stored presets, however, are deleted during initialisation and previously entered parameters are written over with their initialisation values.
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