Digital air- conditioner controller KR- 454
6. ACCESSORY UNITS
6.1. EMERGENCY VENTILATION SWITCH AND RS-232 COMPUTER INTERFACE
The emergency switch module FBS-477 features an emergency switch for the roof duct
fans and a separate socket for the computer interface to diagnose the air-conditioning
system.
The unit also features a front box control for the upper deck.
S1 S2 S3 S4 emergency switch and interface
Function:
If a total failure of the AIR-CONDITIONER CONTROLLER should occur, you can use a
ball-point pen, pencil or other sharp implement to press the switch located in the triangle
symbol. This switches off the air-conditioner controller and increases the speed of the
roof duct fans to maximum speed with no regulation function. This function is indicated
by a red LED in the emergency switch triangle.
The emergency function “ventilation mode“ can only be stopped by switching off the
engine. The air-conditioner controller is switched back on and then runs through its test
cycle (which takes approx. 3 minutes).
6.2 COMPUTER INTERFACE
There is a socket for the test computer (e.g. laptop) on the right-hand side of the
FBS-477 for test purposes.
Only systems of Messrs. NEOPLAN or BADER GmbH may be connected!
Connecting circuit diagrams: see appendix
6.3 CONTROL UNIT FOR FRONT BOX UPPER DECK:
Setting- and display range 0-100 in 5-step-intervals.
The actual setpoint of the front box upper deck is displayed by a short pressing (press
and release) of keys
S1
or
S2 (FBS-477).
Display f.ex. “
O
50
“
You can change the setpoint in 5-step-intervals per key pressure with keys “-“ and “+“.
With air-conditioned front box with incorporated temperature sensor the display of the
setting range has got a decimal dot. For example: “
O 5.0
“.
If you don't press any of these keys the actual setpoint is stored and displayed. The
display goes back to its former status after about 5 seconds.
INDUSTRIE-ELEKTRONIK
Control and regulating systems for vehicle air conditioning
D-71691 Freiberg a.N., Siemensstr.21
Phone: +49 7141 / 68877 - 0 Fax: +49 7141 / 68877 - 39
page: 22
of: 42
04541530.SDW
Issue: October 1998 - Copyright (C) BADER GmbH - Alterations reserve
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