stertil COMBILOK, Руководство пользователя

Страница: 25 / 74

21
4.3 PUTTING INTO OPERATION
4.3.1
General
The control is of the dedicated control type (i.e. is only suitable for the Combilok) with a microprocessor
(a calculation unit) and a number of fixed I/Os (Inputs/Outputs). On the outside of the control box there are a
number of push buttons and indication lamps for the automatic execution of the locking program. The control box
contains a number of microswitches for the manual execution of the four movement options. The text next to the
buttons indicates which movement is being executed. There are also a number of LEDs for detecting the non-visible
inputs (the limit and pressure switches, the wheel sensor, the release contact), all of which are designed to simplify
putting into operation and fault analysis. The cables are colour-coded and are connected to the connection terminals
provided with text according to the electrical circuit diagram (FIG. G).
Before automatic starting, the following inputs and outputs are tested:
Checking the outputs (see fig. 2A and FIG. G)
- Turn the main switch on.
- Press the 'reset alarm' button, this switches on the control voltage.
- Press the 'long out' button of the internal operation. The longitudinal cylinder now goes out. Hold in the button
until the cylinder is completely out.
- Press the 'long in' button. The cylinder now goes in.
- Do the same with the lateral cylinder using the 'lat in' and 'lat out' buttons.
If necessary, replace the hoses and/or the plugs of the valves.
Checking the inputs (see fig. 2A and FIG. G)
- Check the operation of the wheel sensor. Mask off the hole in the plastic block on the top of the Combilok.
Check that LED D11 (wheel sensor) is on.
- Using the button 'lat in' to guide the lateral cylinder in until LED D12 (limit switch “in”) goes
out
.
- Using the button 'lat out' to guide the lateral cylinder out until LED D13 (limit switch “out”) goes out .
- Using the button 'long in' to guide the longitud. cylinder in until LED D14 (release press. switch) comes on.
- Using the button 'long out' to guide the longitud. cylinder out until LED D15 (blocking press.switch) comes on.
- Operate the limit switch for release on the C.T.L. of the dock leveller, so that LED D16 comes on.
- Operate the door and check if LED D17 lights up (pulse) or comes on as soon as the door is in closed position.
Checking and adjusting the wheel sensor
The range of the wheel sensor, with the cross-head fully retracted, is Ex Works set to a maximum of 50 cm. When
checked, this value should be 40 up to 50 cm, absolutely not more!
The switch point can be checked by moving the hand or a subject in front of the hole of the sensor in the plastic
block, starting at about 70 cm and then moving towards the sensor. At the moment the sensor switches, a click is
heard in the control box and LED 11 (wheelsensor) starts lighting. The range of the sensor can be adjusted with the
adjusting screw on top of the housing. Turning to the left (towards NEAR) decreases the range, turning to the right
(towards FAR) increases it.
Setting the DIP switches
The following settings can be made with the DIP switches DS1 (see FIG. D).
Switch 1 - Release of dock ('D-D') function. With the switch in the lower position, the dock leveller (if contact 'D-
D' is connected to clamps “M” in FIG. D) is released at the moment that the vehicle is locked. With the switch in the
upper (ON) position the dock leveller is continuously released (service position dock leveller).
Switch 2 - Inversion switch. Set in lower position. In upper (ON) position, "release dock" ("D-D") is turned into a
normally closed contact.
Switch 3 - Pressure monitoring. At the moment that the wheel is pressed by the Combilok, the pump is switched
off at a preset value. The pressure on the wheel is maintained by means of a non-return ball check valve. With the
switch in the lower position, this pressure is monitored. If the pressure drops, the pump will switch on until the set
pressure is reached again. With the switch in the upper (ON) position the pressure is not monitored.
Switch 4 - Release by dock function. With the switch in the lower position, the neutral position of the dock leveller
is scanned with the connected limit switch. The Combilok will not function as long as the contact on clamps “F” in
FIG. D is not made. With the switch in upper (ON) position, this contact is bridged and the Combilok functions
independently of the dock leveller.