Bacharach 2772-0803 manual Door Open and Cover Removed from Back of Door

REMOTE INTELLIGENT SENSOR - AREA MONITOR

	DIP SWITCH 2
DIP SWITCH 1			ON/OFF SWITCH SW1
DO NOT TOUCH !!		BATTERY PLUG		VOLTAGE REGULATOR VR1
		OPTION
		BOARD
LCD
ADJUST			RIBBON		BATTERY		PNEUMATIC
POT.			CABLE
				J5			HOSES AND
	B			FILTER			CONNECTOR
				J1
		PRINTER	INTERFACE				DOOR SWITCH
EPROMS	A
		SOCKET	CABLE		CASSETTE		MAGNET
		MAIN BOARD					ADJUSTMENT
DOOR
PROMIXITY
SWITCH		FLOW ADJUST POT. CABLE GLANDS
RED TEST BUTTON					TAPE	LIGHT	MECHNICAL
			TAPE GATE LEVER		RESET	LEVEL	CHASSIS
					BUTTON	ADJUST

Figure 1-2. Door Open and Cover Removed from Back of Door

On the main board are mounted several potenti- ometers and ‘dip’ switches. These should not nor- mally be touched, particularly dip switch 1. However, a potentiometer (POT) is provided for user adjustment of the pump flow rate. The location of the POT is shown in Figure 1-2 and an explanation of how the flow rate is adjusted is provided in Section 4.5.

System operating software is stored in two EPROM’s that are fitted on the board and marked with the version number. These devices should not be normally touched or removed except if a factory upgrade is received.

The main board is protected by a black molded cover held on by two screws and two pegs.

1.3.4SYSTEM POWER SWITCH SW1. RIS operation is controlled by a switch mounted on the base board. SW1 is located at the top left of the right hand unit, see Figure 1-2.

When SW1 is ‘OFF’, the system is off. With the switch ‘ON’, the system will operate from the ex- ternal 12 volts input, or the systems back-up bat- tery if the external power is disconnected, or fails.

1.3.5MECHANICAL CHASSIS. This subas- sembly carries the optic block and its associated PCB, the tape drive mechanism and take-up drive clutch.

Also mounted on the chassis is the pump, with the pneumatic elements and plumbing necessary for the track switching and purge functions. The tape cassette is mounted directly on the front face of the chassis.

1.3.6BACK-UP BATTERY. The lead acid battery is located immediately above the mechanical chassis and is secured to the system base board with metal clips. It is connected to the system via a short cable plug and socket (J5).

The battery is automatically ‘float charged’

whenever the RIS is connected to a 12 VDC supply. The battery is charged with SW1 off or on. If the RIS supply fails, the back-up battery will keep the system running for 2-3 hours. The support time depends upon the system type, specification, and the battery condition.

If the RIS is being shipped, or will remain unused and disconnected from the input supply for more than a few days, it is good practice to disconnect the battery, at the plug and socket.

NOTE: If the internal system switch, SW1, is left on and the RIS input supply is disconnected, the battery will discharge.

If the RIS input supply is disconnected, the battery will discharge, irregardless of SW1 being on or off.

1.3.7BASE BOARD. This is a printed circuit board fixed to the base of the enclosure. It provides the interconnection between the subassemblies mounted on it and the main circuit board on the door.

Other circuit elements located on this board include; the analog output, solid state output ‘relays’, interface terminal strip J1, voltage regula- tor potentiometer VR1 and system switch SW1.

The current Phase 2 boards have 3 solid state ‘relay’ devices. Terminal identification and number- ing have varied and the appropriate interface diagram should be used. Both versions are shown in Figure 2-3.

NOTE: The earlier (Phase 1) versions (Produced before April '92) are described in Supplement A, in the rear of this manual.

The 3 ‘relay’ devices are standard, but only one ‘relay’ output is active and available unless the optional Alarm Relay PCB (Section 5.5) is installed.

Page 1-2 Instruction 2772-0803