Siemens Expert Series Quick start guide

PMA Prozeß- und Maschinen-Automation GmbH

Temperature controller KS 50-1

KS50-1

TCont

Operating Note

English

9499-040-64411

Valid from: 8403

expert line for tempering units and hot runners

means without prior written permission from the copyright owner.

Subject to alterations without notice.

A publication of PMA Prozeß- und Maschinen- Automation

Postfach 310229

D-34058 Kassel

Germany

Contents

1Introduction ............................3

1.1 Definitions..............................3

2Hints on operation .........................4

2.1 Electrical connections ........................4

2.2 Bus interface.............................4

2.3 Connection example.........................5

3Operation ..............................6

3.1 Front view ..............................6

3.2 Behaviour after power-on ......................7

3.3 Functions for tempering units ....................7

3.4 Functions for hot-runner ......................10

4Configuration extensions .....................11

5Parameter extensions .......................13

6Communication protocol .....................14

6.1 Data format.............................15

6.2 Protocol structure .........................15

7Protocol for tempering equipment................16

7.1 Master telegram ..........................16

7.2 Slave telegram ...........................17

7.3 Error messages ...........................18

7.4 Alarm Reset ............................19

8Protocol for hot-runner systems .................20

8.1 Master telegram ..........................20

8.2 Slave telegram ...........................21

9ORDERING INFORMATION .................22

10 TECHNICAL DATA .......................23

11 Index ................................27

1Introduction

Thank you for buying a KS 50-1 TCont.

This expert line unit offers special functions for tempering and hot-runner

equipment. An optional 20mA current loop or an RS485/422 interface are

available for easy connection of peripheral units including a KS 50-1 TCont to a

machine control system.

The protocol is widely used in the plastics industry and supported by many

injection moulder and extruder manufacturers, e.g. Arburg, Engel and

Krauss-Maffei. Another name for it is ”ARBURG protocol”.

This operating note describes the extended functions and features of

KS 50-1 TCont. For all other functions, refer to operating manual

9499-040-62811 for KS 50-1 Industrial Controller.

1.1 Definitions

A current loop interface transmits serial data by switching on and off a 20mA

current in a conductor loop at the data bit clock. During the rest condition, or

during transmission of ”1” bits, a constant 20 mA current is flowing, whilst the

current flow is intermittent with ”0” bits.

Another name for 20mA current loop interface is TTY interface

(TeleTYpe(writer)).

lCaution! The unit contains ESD-hazarded components.

ARBRUG is a registered trademark of ARBURG GmbH + CO, D-Loßburg.

Introduction

Operating note KS 50-1 TCont 3 Definitions

2Hints on operation

2.1 Electrical connections

* Safety switch mA iV turned left

gThe controller is provided with flat-pin terminals 1 x 6,3mm or 2 x 2,8mm to

DIN 46 244. Or with screw terminals depending on ordering code.

2.2 Bus interface

1Connection of the TTY bus interface (example)

Hints on operation

Electrical connections 4 Operating note KS 50-1 TCont

Logic

di2

di3

90...250V

24V AC/DC

+24V DC

24V GND

0..10 V*

di1

INP1

INP2

OUT3

OUT2

OUT1

(2)

(16)

OUT5

OUT6

TTY

+ 20mA

20mA GND

RXD-B

GND

RXD-A

TXD-B

TXD-A

RS485 / RS422

RGND

DATA B

DATA A

alternativ

(16)

converter

TTY -RS232

PC +20mA

20mA GND

max. 1000m

(”Twisted Pair”)

+20mA

20mA GND

-T

2Alternative connection of the RS485/422 bus interface (example)

2.3 Connection example

Hints on operation

Operating note KS 50-1 TCont 5 Connection example

(16)

RGND RGND RGND

converter

RS485-RS232

DATA A

DATA B

DATA A

DATA B

DATA A

DATA B

max. 1000m

”Twisted Pair”

R=100 Ohm

RGND connection optional

R = 120...200 OhmT

OUT1

OUT2

OUT3

STL

heating

cooling

pump

INP1

INP2

heating

current

process

value

di1

di2

di3

STL

L.start

L.stop

remote/local

TTY

mould

tempering unit

3Operation

3.1 Front view

LED colours :

LED 1, 2, 3: yellow

LED OK: green

other LEDs: red

gIn the upper display line, the process

value is always displayed. At parameter, configuration, calibration as well as

extended operating level, the bottom display line changes cyclically between

parameter name and parameter value.

gLED REM -6displays the remote/local mode. In mode remote this LED lights

and value changes via front keys are locked.

Operation

Front view 6 Operating note KS 50-1 TCont

1Status of switching outputs

OuT.1... 6

2Lights with limit value 1

(PArA /Lim) not exceeded

3Process value display

4Set-point, controller output

5Signals ConF and PArA level

6Device in remote mode

7Self-tuning active

8Entry in error list

9Set-point SP.2 or SP.E is

effective

0Set-point gradient is effective

!Manual/automatic switch-over:

Off: Automatic

On: Manual

(changing possible)

Blinks: Manual

(changing not possible)

(rConF/Cntr/MAn))

"Enter key:

calls up extended

operating level / error list

§Up/ Down keys:

changing the set-point or the

controller output value

$Manual mode /spec. function

(→ConF /LOGI)

%PC connection for

BlueControl (engineering

tool

&Remote/local-switch /

spec. function

(→ConF /LOGI)

KS 50-1 TCont

180

178.

SP.x Rem

Err

Ada

123OK

3.2 Behaviour after power-on

After supply voltage switch-on, the unit starts with the remote mode and goes

then into the standby mode. The controller mode is switched off. (SP =OFF).

3.3 Functions for tempering units

KS 50-1 TCont has a lot of possibilities to connect signals coming from and

going to the tempering unit.

wThe process value is connected to INP1.

wAn output signal of a safety temperature limiter (STL) can be attached

alternatively to di1 to di3. When responding the STL the controller goes into

the switching off mode (stop). The signal is passed on in the protocol (see

page 18).

wThe operation of the controller can be accomplished in the remote or in local

operation. For the change-over the inputs di1 to di3 or the F-key are

available. In remote mode values can be given only over the attached

interface; inputs via the front are blocked. Vice versa in local mode set-point

operations over the interface are not permitted. As answer the device

supplies a NAK message.

wFor local starting and stopping of the tempering unit push-buttons or

switches can be selected and attached at the inputs di1 to di3. The function

start or stop is released with the change of 0 to 1, independently of the

configuration of di.Fn as push-button or switch.

wSelected signals for sensor mode, level alarm or flow alarm can be connected

to di1 to di3. They are only through-handed in the device, but indicated in

the protocol (see page 17).

wThe alarm for safety temperature - monitoring can be determined with limit 1

(Lim.1).

wKS 50-1 TCont supplies a continuous signal to control a pump, which can be

connected to OUT1 to OUT6.

wAfter a stop command the pump is only switched off, if the return flow

temperature is fallen below the adjusted limit, which is defined over the

set-point SP2.

gIf the inputs for start and stop are not wired, then the same functionality can be

achieved in local mode by switching on and off the controller function (for

switching off put the set-point SP to OFF; for switching on enter a valid

set-point). The start instruction corresponds to the control command (r) in the

remote mode, the stop command to the control command (p).

Operation

Operating note KS 50-1 TCont 7 Behaviour after power-on

Signal connection types

Signal Connection types Remarks

Pt100 / TC – sensor, internal or external INP1

Heating current input, if applicable INP2

STL input from safety temperature limiter di1...3 

remote – local – switch-over di1...3, F-Key 

local – start; push-button function di1...3 

local – stop; push-button function di1...3 

Sensor operating mode: 0= internal; 1= external; di1...3  

Input for alarm “level”: 0= ok; 1= alarm di1...3  

Input for alarm “flow”: 0= ok, 1= alarm di1...3  

Output heating relay OUT1..3, OUT5..6 

Output cooling relay OUT1..3, OUT5..6 

Output pump relay OUT1..3, OUT5..6 

alarm safety temperature LiM.1

Set-point for return flow temperature SP.2

Signals are only transferred in communication protocol.

Alternative connection types

The function flow is described in the following state diagram.

The implemented actions executed at a change-over of states are shown in the

following table.

Operation

Functions for tempering units 8 Operating note KS 50-1 TCont

Power down

Standby /Rem Standby/ Loc

Controlling / Rem Loc

T2 T3 T4 T5 T6

T10

T11 T12

T13

T14

Controlling /

Transi

tion previous

state following

state event condition action

T1 Power down Standby/Rem Power on none - start-initialization

- controller switched off

- remote mode

- no self-tuning

T2 Standby/Rem Controlling/

Rem Control

command

(r)

remote - switch on pump

- switch on controller

- start self-tuning, if applicable

- control to set-point

T3 Controlling/

Rem Standby/Rem Control

command

(k)

remote - if X > SP2: cooling

- then switch off controller

- switch off pump

T4 Controlling/

Rem Standby/Rem Control

command

(p)

remote - if X > SP2: cooling

- then switch off controller

- witch off pump

T5 Standby/Loc Controlling/

Loc local start

signal local as T2

T6 Controlling/

Loc Standby/Loc local stop

signal local as T4

T7 Standby/Rem Standby/Loc r/l-switch-

over local toggle to local

T8 Standby/Loc Standby/Rem r/l-switch-

over remote toggle to remote

T9 Controlling/

Rem Controlling/

Loc r/l-switch-

over local toggle to local

T10 Controlling/

Loc Controlling/

Rem r/l-switch-

over remote toggle to remote

T11 Controlling/

Rem Standby/Rem STL active remote as T4

T12 Controlling/

Loc Standby/Loc STL active local as T4

T13 Standby/Rem Controlling/

Rem identifier

(R) remote -Acknowledge/delete the

existing alarms

- continue with T2

T14 Controlling/

Rem Controlling/

Rem identifier

(R) remote - Acknowledge/delete the

existing alarms

- continue with T2 (however

without self-tuning)

Operation

Operating note KS 50-1 TCont 9 Functions for tempering units

3.4 Functions for hot-runner

To operate with the protocol extension for hot-runners only a few additional

inputs and outputs are needed.

wThe operation of the automatic controller can be switched over from remote

to local operation. Therefore the inputs di1 to di3 or the F-key are available.

In local operation a start-/stop functionality can be achieved by switching on and

off the controller (for switching off put the set-point SP to OFF; for switching

on enter a valid set-point). The start command corresponds to the control

command (r) in the remote mode, the stop command to the control command (a).

Operation

Functions for hot-runner 10 Operating note KS 50-1 TCont

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