Siemens AS 235 Operation unit, PBT 65 process operation keyboard, Mode of operation, Test mode

This catalog is out of date, see note on page 1

Input and output devices

Operation unit

PBT 65 process operation keyboard

Fig. 5/3 PBT 65 process operation keyboard

PBT 65 process operation keyboard

￿The PBT 65 process operation keyboard is used:

• To enter operating data

• For process operations (modification of operating modes, values and statuses)

• To select area, group and loop displays

• To acknowledge messages and horn alarms.

It is possible to connect an additional configuring keyboard.

Design

The PBT 65 process operation keyboard consists of a desktop housing with

• dust-proof and slash-proof touch pad keyboard,

•LCD unit and

•keyboard electronics.

At the rear there are connections for the configuring keyboard, the automation system and the DC 24 V power supply.

In order to achieve the degree of protection IP 65, it is neces- sary to protect the rear connections against dust, splashing and gases. A keyboard attachment is available for this purpose as an IP 65 kit. Without this kit, the process operation keyboard corresponds to the degree of protection IP 20.

The two-row LCD unit of the process operation keyboard can display 40 characters in each line. The top line is used for mes- sages, the bottom line for the variable inscription of the 8 keys located below it. The background can be illuminated if neces- sary. The background illumination is automatically switched off if no operations are made for a longer period of time.

Mode of operation

The functions of the process operation keyboard are enabled in

4authorization stages and selected using authorization keys identified by key switch symbols and a password.

The 4 authorization stages have the following meaning:

•Stage 1: keyboard "OFF", no operation possible

•Stage 2: process operation keyboard "ON"

•Stage 3: configuring keyboard "ON"

•Stage 4: configuring keyboard and process operation key- board "ON".

A 4-digit password which can be individually modified is

assigned to each authorization key. The last authorization stage selected is automatically present when the PBT 65 process operation keyboard is switched on. Transfer to a different authorization stage is only possible if the appropriate password is known. The authorization stage set is indicated by a yellow LED integrated in the corresponding key.

Test mode

The PBT 65 process operation keyboard has an integrated test mode. The test functions include initialization and deletion of the LCD, EPROM, LED, LCD, RAM, interfaces, testing of the authorization memory, and resetting of passwords.

Aspecial test cable which must be ordered separately is required for this PBT test.

Technical data

￿
			20-mA current loop interface,
	Automation system
			floating, active, 1200 bits/s
	Configuring keyboard		20-mA current loop interface,
			floating, passive, 1200 bits/s
	Power supply		DC 24 V (18 to 33 V), 200 mA
	Permissible ambient temperature
	– Operation		0 to +40 °C
	– Transport and storage		-40 to +70 °C
	Permissible relative humidity		Max. 95 % at 25 °C
	Dimensions (H x W x D) in mm
	– Without IP 65 kit		84 x 370 x 305
	– With IP 65 kit		95 x 370 x 373
	Weight		Approx. 3.6 kg
	Ordering data		Order No.
	PBT 65 process operation key-		6DS3 305-8BA
	board
	IP 65 kit		C79372-A3018-D1
	Test cable		C79372-A3018-D2
	Instruction Manual
– German			C79000-B8000-C410
– English			C79000-B8076-C410
	Connecting cable
	for power supply to process oper-
	ation keyboard,
	– With 2 plugs		6DS8 103-8
￿– With 1 plug			6DS8 104-8 ￿￿
	3 m MC	5 m SC 10 m AD
	Connecting cable
	for connection of PBT 65 to an
	automation system		6XV2 167-8C
	3 m H30	25 m N25 100 m T10		￿￿	￿
	5 m H50	40 m N40 120 m T12
	10 m N10	50 m N50 150 m T15
	16 m N16	80 m N80
	Connection diagrams: see page 3/29 ff.

Summary of connecting cables with description: see page 3/34.

Siemens PLT 111 · 1999 5/5