West Control Solutions N8800 User Manual

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Process controller 8800

Operating manual

English

9499-040-70611

Valid from: 8405

8800/8840 Configurator

More efficiency in engineering, more overview in operating: The projecting environment for the West controllers 8800/8840

ATTENTION!

Mini Version and Updates on

www.westinstruments.com

Description of symbols:

g General information a General warning l Attention: ESD sensitive devices

© West Instruments • Printed in Germany All rights reserved. No part of this document may bereproduced or published in any form or by any means without prior written permission from the copyright owner. A publication of West Instruments, The Hyde Business Park, Brighton BN2 4JU, England

Contents

1 Mounting ..............................6

2 Electrical connections .......................7

2.1 Connecting diagram .......................7

2.2 Terminal connection.........................8

3 Operation .............................12

3.1 Front view ............................12

3.2 Behaviour after power-on .....................13

3.3 Operating level ...........................13

3.4 Error list / Mainenance manager .................14

3.5 Self-tuning .............................17

3.5.1 Preparation for self-tuning .......................17

3.5.2 Optimization after start-up or at the set-point ..............18

3.5.3 Selecting the method ( ConF/ Cntr/ tunE).............18

3.5.4 Self-tuning start .............................22

3.5.5 Self-tuning cancellation ........................22

3.5.6 Acknowledgement procedures in case of unsuccessful self-tuning . 23

3.5.7 Examples for self-tuning attempts ..................24

3.6 Manual self-tuning .........................25

3.7 Second PID parameter set .....................26

3.8 Alarm handling...........................27

3.9 Operating structure.........................29

4 Configuration level ........................30

4.1 Configuration survey ....................30

4.2 Configuration parameters ....................31

4.3 Set-point processing ........................49

4.3.1 Set-point gradient / ramp ........................49

4.4 Switching behaviuor ........................50

4.4.1 Standard ( CyCl= 0 ) .........................50

4.4.2 Switching attitude linear ( CyCl= 1 ).................50

4.4.3 Switching attitude non-linear ( CyCl= 2 )...............51

4.4.4 Heating and cooling with constant period ( CyCl= 3 )........52

8800 process controller 3

4.5 Configuration examples ......................53

4.5.1 On-Off controller / Signaller (inverse) .................53

4.5.2 2-point controller (inverse) .......................54

4.5.3 3-point controller (relay & relay) ....................55

4.5.4 3-point stepping controller (relay & relay) ...............56

4.5.5 Continuous controller (inverse) .....................57

4.5.6 ∆ - Y - Off controller / 2-point controller with pre-contact ......58

4.5.7 8800 process controller with measured value output ..........59

4.5.8 Continuous controller with integrated positioner ( Cntr/ C.Fnc = 6 )60

5 Parameter setting level ......................61

5.1 Parameter survey ........................61

5.2 Parameters .............................62

5.3 Input scaling ............................65

5.3.1 Input Inp.1 and InP.3 .............65

5.3.2 Input InP.2...............................66

6 Calibration level .........................67

7 Special functions .........................70

7.1 DAC®– motor actuator monitoring ...............70

7.2 O2measurement ..........................72

7.2.1 Connection ...............................72

7.2.2 Configuration: ..............................73

7.3 Linearization ............................74

7.4 8800 process controller as Modbus master ............75

8 8800/8840 configurator ......................76

9 Versions ..............................77

10 Technical data ..........................78

11 Safety hints ............................81

11.1 Resetting to factory setting.....................82

12 Notes ................................83

4 8800 process controller

1 Mounting

Mounting

min.48 (1.89")

(0.4")

118

WEST

96 (3.78")

Process Controller

48 (1.89")

(4.65")

8800

1..10

(0.04..0.4")

+0,6

(1.77" )

+0.02

Loc

security switch

+0,8

+0.03

max.

(3.62" )

max. 95% rel.

60°C

0°Cmin.

Safety switch:

For access to the safety switch, the controller must be withdrawn from the housing. Squeeze the top and bottom of the front bezel between thumb and forefinger and pull the controller firmly from the housing.

Loc open Access to the levels is as adjusted by means of 8800/8840 configurator

(engineering tool) 2

closed 1 all levels accessible wihout restriction

1 Factory setting 2 Default setting: display of all levels

suppressed, password PASS = OFF

8800 process controller 5

Caution! The unit contains ESD-sensitive components.

Electrical connections

2 Electrical connections

2.1 Connecting diagram

90...250V 24 V UC

OUT1

OUT2

OUT3

OUT4

d b

RGND

DATA B

DATA A

RS485 RS422

Modbus RTU

1 2 3

4 5 6

7 8 9

10 11 12

13 14 15

+24V DC

OUT5 OUT6

24V GND

RXD-B

RXD-A

TXD-B

TXD-A

GND

di2

di3

1 2 3

di1

di2

4 5 6

INP2

8 9

10 11

(mV)

100%

INP3

13 14 15

Volt

INP1

(16)

Option

(2)

(16)

VP (5V)

DGND

RxD/TxD-N

RxD/TxD-P

Schirm/ Screen

PROFIBUS-DP

(mV)

390 [

220 [

Adapter

390 [

DGND

VP (5V)

Profibus DP

max.

1200m

Dependent of order, the controller is fitted with :

flat-pin terminals 1 x 6,3mm or 2 x 2,8mm to DIN 46 244 or

screw terminals for 0,5 to 2,5mm²

Connecting diagram 6 8800 process controller

2.2 Terminal connection

Power supply connection 1

See chapter 10 "Technical data"

Electrical connections

Connection of outputs OUT1/2 2

2 OUT1/2 heating/cooling

Relay outputs (250V/2A), potential-free changeover contact

Connection of outputs OUT3/4 3

a relay (250V/2A), potential-free

changeover contact universal output

b current (0/4...20mA) c voltage (0/2...10V) d transmitter supply e logic (0..20mA / 0..12V)

Connection of input INP1 4

Input mostly used for variable x1 (process value)

a thermocouple b resistance thermometer (Pt100/ Pt1000/ KTY/ ...) c current (0/4...20mA) d voltage (0/2...10V)

10 11 12

13 14 15

10 11 12

13 14

(16)

1 2 3

4 5 6 7 8 9

Connection of input INP2 5

f heating current input (0..50mA AC)

or input for ext. set-point (0/4...20mA)

g potentiometer input for position

feedback

Connection of input INP2 5

a Heating current input (0...50mA AC)

or input for ext. Set-point (0/4...20mA)

b Potentiometer input for position

feedback

Connection of input INP3 6

As input INP1, but without voltage

Connection of inputs di1, di2 7

Digital input, configurable as switch or push-button

5 INP2 current tansformer

1 2

3 4

5 6

7 8

Logik

10 11 12

13 14 15

10 11 12

13 14 15

(16)

1 2 3

4 5

6 7

8 9

SSR

8800 process controller 7 Terminal connection

Electrical connections

Connection of inputs di2/3 8 (option)

Digital inputs (24VDC external), galvanically isolated, configurable as switch or push-button

Connection of output U

9 (option)

Supply voltage connection for external energization

Connection of outputs OUT5/6 0 (option)

Digital outputs (opto-coupler), galvanic isolated, common positive control voltage, output rating: 18...32VDC

Connection of bus interface ! (option)

PROFIBUS DP or RS422/485 interface with Modbus RTU protocol

89 di2/3, 2-wire transmitter supply

OUT3

10 11

13 14 15

Option

(16)

13 14

+24VDC

17,5V 22mA

5mA

(2)

(16)

If the universal output OUT3 or OUT4 is used there may be no external galvanic connection between measuring and output circuits!

Terminal connection 8 8800 process controller

3 OUT3 transmitter supply

Electrical connections

13V

22mA

10 11

13 14 15

11 12

(16)

13 14

9 RS485 interface (with RS232-RS485 interface converter) *

R = 120...200 OhmT

RGND connection optional

RGND

DATA B

DATA A

option

(2)

(16)

RGND

DATA B

DATA A

option

(2)

(16)

max. 1000m

"Twisted Pair” cable

RGND

DATA B

DATA A

R=100 Ohm

option

(2)

(16)

R = 120...200 OhmT

RS485-RS232

converter

* Interface description Modbus RTU in speperate manual: see page 75.

8800 process controller 9 Terminal connection

Electrical connections

3 OUT3 as logic output with solid-state relay (series and parallel connection)

Series connection

SSR

I =22mA

max

SSR

12V

Logic

SSR

Parallel connection

I =22mA

max

12V

10 11

8800 process controller connecting example:

fuse

8840 profiler

1 2

3 4

5 6

7 8 9

10 11

13 14 15

Logic

10 11 12

13 14

(16)

1 2 3

4 5 6 7 8 9

SSR

fuse

contactor

heating

6700 Limit controller

Standard version: N6700Z21

other versions on requestr

6700 Limit

controller

fuse

CAUTION: Using a Limit controller is recommendable in systems

where overtemperature implies a fire hazard or other risks.

Terminal connection 10 8800 process controller

3 Operation

4 5

7 8

(

9 0

§"

3.1 Front view

Operation

1 Status of switching outputs

OuT.1... 6

2 Process value display 3 Set-point, controller output 4 Signals display on °C or °F 5 Signals ConF and PArA level 6 Signals aktive function key 7 Self-tuning active 8 Entry in error list 9 Bargraph or clear text display 0 SP.2 is effective ! SP.E is effective " Set-point gradient effective

§ Manual/automatic switch-over:

Off: Automatic On: Manual (changing possible) Blinks:Manual (changing not

possible (r ConF/ 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 )

LED colours:

LED 1, 2, 3, 4: yellow Bargraph: red other LEDs: red

/ Freely programmable function

key

( PC connection for

8800/8840 configurator (engineering tool)

In the upper display line, the process value is always At parameter, configuration, calibration as well as extended operating level, the bottom display line changes cyclically between parameter name and parameter value.

displayed.

8800 process controller 11 Front view

Operation

3.2 Behaviour after power-on

After supply voltage switch-on, the unit starts with the operating level. The unit is in the condition which was active before power-off. If the 8800 process controller was in manual mode at supply voltage switch-off, the controller will re-start with the last output value in manual mode at power-on.

3.3 Operating level

The content of the extended operating level is determined by means of 8800/8840 configurator (engineering tool). Parameters which are used frequently or the display of which is important can be copied to the extended operating level.

time

out

utomatic

1199

1200

È Ì

1199

Y21

only

display

anua

1199

Y21

È Ì

1199

1200

È Ì

time

out

Extended operating level

time

out

Error list (if error exists)

126

FbF.1

Err

Behaviour after power-on 12 8800 process controller

Display

switching

126

Err

3.4 Error list / Mainenance manager

With one or several errors, the extended operating level always starts with the error list. Signalling an actual entry in the error list (alarm, error) is done by the Err LED in the display. To reach the error list press Ù twice.

Err LED status Signification Proceed as follows

blinks

(status 2)

lit

(status 1)

off

(status 0)

Alarm due to existing error

Error removed, alarm not acknowledged

No error, all alarm entries deleted

Determine the error type in the error list

After error correction the unit changes to status 1

Acknowledge the alarm in the error list pressing key ÈorÌ

The alarm entry was deleted (status 0).

-Not visible except when acknowledging

Operation

°C

°F

Error list:

Name

E.1

E.2

E.3

E.4

FbF.1

Sht.1

POL.1 FbF.2

Sht.2

POL.2 FbF.3

Sht.3

POL.3

Internal error, cannot be removed

Internal error, can be reset

Configuration error, can be reset

Hardware error - Codenumber and

Sensor break INP1

Short circuit INP1-Sensor defective

INP1polarity error Sensor break INP2-Sensor defective

Short circuit INP2-Sensor defective

INP2 polarity Sensor break INP3-Sensor defective

Short circuit INP3-Sensor defective

INP3 polarity

Description Reason Possible remedial action

- E.g. defective EEPROM - Contact West service

- Return unit to our factory

- e.g. EMC trouble - Keep measurement and power supply cables in separate runs

- Ensure that interference suppression of contactors is provided

- wrong configuration

- missing configuration

- Check interaction of configuration / parameters

- Contact West service

hardware are not identical

Sensor defective

Faulty cabling

- Elektronic-/Optioncard must be exchanged

Replace INP1 sensor

Check INP1 connection

Replace INP1 sensor

Check INP1 connection

Reverse INP1 polarity

Replace INP2 sensor

Check INP2 connection

Replace sensor INP2

Check INP2 connection

Reverse INP2 polarity

Replace INP3 sensor

Check INP3 connection

Replace sensor INP3

Check INP3 connection

Reverse INP3 polarity

8800 process controller 13 Error list / Mainenance manager

Operation

Name

HCA

SSr

LooP

AdA.H

AdA.C

LiM.1

Lim.2

Lim.3

Inf.1

Inf.2

E.5

dp.1

dp.2

dp.3

Description Reason Possible remedial action

Heating current alarm (HCA)

Heating current circuit

interrupted, I< HC.A or

Check heating current circuit

If necessary, replace heater band

I> HC.A (dependent of configuration) Heater band defective

Heating current short circuit (SSR)

Current flow in heating

circuit with controller

Check heating current circuit

If necessary, replace solid-state relay

off SSR defective

Control loop alarm (LOOP)

Input signal defective or

not connected correctly Output not connected

correctly

Check heating or cooling circuit

Check sensor and replace it, if

necessary Check controller and switching

device

Self-tuning heating alarm

See Self-tuning heating

error status

see Self-tuning heating error status

(ADAH) Self-tuning heating

alarm cooling (ADAC)

stored limit alarm 1 - adjusted limit value 1

See Self-tuning cooling

error status

see Self-tuning cooling error status

- check process

exceeded

stored limit alarm 2 - adjusted limit value 2

- check process

exceeded

stored limit alarm 3 - adjusted limit value 3

- check process

exceeded

time limit value message

duty cycle message (digital ouputs)

Internal error in DP module

- adjusted number of operating hours reached

- adjusted number of duty cycles reached

self-test error

internal communication

- application-specific

Switch on the instrument again

Contact West service

interrupted

No access by bus master

bus error

connector problem

no bus connection

Faulty configuration-Faulty DP

configuration telegram

Inadmissible parameter setting telegram sent

Faulty DP parameter setting telegram

Check cable

Check connector

Check connections

Check DP configuration telegram in master

Check DP parameter setting telegram in master

Check cable connection

Check address

Check master setting

dp.4

No data communication

Bus error

Address error

Master stopped

Error list / Mainenance manager 14 8800 process controller

Operation

Saved alarms (Err-LED is lit) can be acknowledged and deleted with the digital input di1/2/3, the è-key or the Ò-key. Configuration, see page 37: ConF / LOGI / Err.r

If an alarm is still valid that means the cause of the alarm is not removed so far (Err-LED blinks), then other saved alarms can not be acknowledged and deleted.

Self-tuning heating ( ADA.H) and cooling ( ADA.C) error status:

Error status

Description Behaviour

No error

Faulty control action

No response of process variable

Low reversal point Increase ( ADA.H) max. output limiting Y.Hi or decrease

Re-configure controller (inverse i direct) The control loop is perhaps not closed: check sensor, connections

and process

( ADA.C) min. output limiting Y.Lo

Danger of exceeded

If necessary, increase (inverse) or reduce (direct) set-point set-point (parameter determined)

Output step change too small (∆y > 5%)

Set-point reserve too small

Increase ( ADA.H) max. output limiting Y.Hi or reduce

( ADA.C) min. output limiting Y.Lo

Acknowledgment of this error message leads to switch-over to

automatic mode.If self-tuning shall be continued,

increase set-point (invers), reduce set-point (direct)

or decrease set-point range

(r PArA / SEtp / SP.LO and SP.Hi )

Impulse tuning failed The control loop is perhaps not closed: check sensor, connections

and process

DAC function ( DAC) error status:

Error

status

0 3 4 5 6

No error Output is blocked Check the drive for blockage Wrong method of operation Wrong phasing, defect motor capacitor Fail at Yp measurement Check the connection to the Yp input Calibration error Manual calibration necessary

Description Behaviour

8800 process controller 15 Error list / Mainenance manager

Operation

3.5 Self-tuning

For determination of optimum process parameters, self-tuning is possible. After starting by the operator, the controller makes an adaptation attempt, whereby the process characteristics are used to calculate the parameters for fast line-out to the set-point without overshoot.

The following parameters are optimized when self-tuning: Parameter set 1:

Pb1 - Proportional band 1 (heating) in engineering units [e.g. °C] ti1 - Integral time 1 (heating) in [s]

r only, unless set to OFF

td1 - Derivative time 1 (heating) in [s]

r only, unless set to OFF

t1 - Minimum cycle time 1 (heating) in [s]

r only, unless Adt0 was set to “no self-tuning” during configuration by means of 8800/8840 configurator

Pb2 - Proportional band 2 (cooling) in engineering units [e.g. °C] ti2 - Integral time 2 (cooling) in [s]

r only, unless set to OFF

td2 - Derivative time 2 (cooling) in [s]

r only, unless set to OFF

t2 - Minimum cycle time 2 (cooling) in [s]

r only, unless Adt0 was set to “no self-tuning” during configuration by means of 8800/8840 configurator

Parameter set 2: analogous to parameter set 1 (see page25)

3.5.1 Preparation for self-tuning

Adjust the controller measuring range as control range limits. Set values

rnG.L and rnG.H to the limits of subsequent control. (ConfigurationrControllerrlower and upper control range limits)

ConF r Cntr r rnG.L and rnG.H

Determine which parameter set shall be optimized.

-The instantaneously effective parameter set is optimized. r Activate the relevant parameter set (1 or 2).

Determine which parameter set shall be optimized (see tables above).

Select the self-tuning method

see chapter 3.5.3

-Step attempt after start-up

-Pulse attempt after start-up

-Optimization at the set-point

Self-tuning 16 8800 process controller

3.5.2 Optimization after start-up or at the set-point

The two methods are optimization after start-up and at the set-point. As control parameters are always optimal only for a limited process range, various methods can be selected dependent of requirements. If the process behaviour is very different after start-up and directly at the set-point, parameter sets 1 and 2 can be optimized using different methods. Switch-over between parameter sets dependent of process status is possible (see page 25).

Optimization after start-up: (see page25 ) Optimization after start-up requires a certain separation between process value and set-point. This separation enables the controller to determine the control parameters by evaluation of the process when lining out to the set-point. This method optimizes the control loop from the start conditions to the set-point, whereby a wide control range is covered. We recommend selecting optimization method “Step attempt after start-up” with tunE = 0 first. Unless this attempt is completed successfully, we recommend a “Pulse attempt after start-up”.

Operation

Optimization at the set-point: (see page 18)

For optimizing at the set-point, the controller outputs a disturbance variable to the process. This is done by changing the output variable shortly. The process value changed by this pulse is evaluated. The detected process parameters are converted into control parameters and saved in the controller. This procedure optimizes the control loop directly at the set-point. The advantage is in the small control deviation during optimization.

3.5.3 Selecting the method ( ConF/ Cntr/ tunE)

Selection criteria for the optimization method:

Step attempt after start-up Pulse attempt after start-up Optimization at the set-point

tunE =0

tunE =1

tunE =2

sufficient set-point reserve is

provided

sufficient set-point reserve is

provided

always step attempt after

start-up

Sufficient set-point reserve:

inverse controller: (with process value < set-point- (10% of rnGH - rnGL) direct controller: (with process value > set-point + (10% of rnGH - rnGL)

sufficient set-point reserve is not

provided

sufficient set-point reserve is not

provided

Step attempt after start-up

Condition: - tunE = 0 and sufficient set-point reserve provided or

- tunE =2

The controller outputs 0% correcting variable or Y.Lo and waits, until the process is at rest (see start-conditions on page 16). Subsequently, a correcting variable step change to 100% is output.

8800 process controller 17 Self-tuning

Operation

The controller attempts to calculate the optimum control parameters from the process response. If this is done successfully, the optimized parameters are taken over and used for line-out to the set-point.

With a 3-point controller, this is followed by “cooling”. After completing the 1st step as described, a correcting variable of -100% (100% cooling energy) is output from the set-point. After successfull determination of the “cooling parameters”, line-out to the set-point is using the optimized parameters.

Pulse attempt after start-up

Condition: - tunE = 1 and sufficient set-point reserve provided. The controller outputs 0% correcting variable or Y.Lo and waits, until the process

is at rest (see start conditions page 16) Subsequently, a short pulse of 100% is output (Y=100%) and reset. The controller attempts to determine the optimum control parameters from the process response. If this is completed successfully, these optimized parameters are taken over and used for line-out to the set-point.

With a 3-point controller, this is followed by “cooling”. After completing the 1st step as described and line-out to the set-point, correcting variable "heating" remains unchanged and a cooling pulse (100% cooling energy) is output additionally. After successful determination of the “cooling parameters”, the optimized parameters are used for line-out to the set-point.

Optimization at the set-point

Conditions:

A sufficient set-point reserve is not provided at self-tuning start (see page 17).

tunE is0or1

With Strt = 1 configured and detection of a process value oscillation by

more than ± 0,5% of (rnG.H - rnG.L) by the controller, the control parameters are preset for process stabilization and the controller realizes an optimization at the set-point (see figure “Optimization at the set-point”). when the step attempt after power-on has failed

with active gradient function ( PArA/ SETP/ r.SP≠ OFF), the set-point

gradient is started from the process value and there isn't a sufficient set-point reserve.

Self-tuning 18 8800 process controller

Operation

Optimization-at-the-set-point procedure:

The controller uses its instantaneous parameters for control to the set-point. In lined out condition, the controller makes a pulse attempt. This pulse reduces the correcting variable by max. 20% 1, to generate a slight process value undershoot. The changing process is analyzed and the parameters thus calculated are recorded in the controller. The optimized parameters are used for line-out to the set-point.

Optimization at the set-point

set-point

process value

correcting variable

With a 3-point controller, optimization for the “heating“ or “cooling” parameters occurs dependent of the instantaneous condition. These two optimizations must be started separately.

1 If the correcting variable is too low for reduction in lined out condition it is increased by max. 20%.

8800 process controller 19 Self-tuning

Operation

Optimization at the set-point for 3-point stepping controller

With 3-point stepping controllers, the pulse attempt can be made with or without position feedback. Unless feedback is provided, the controller calculates the motor actuator position internally by varying an integrator with the adjusted actuator travel time. For this reason, precise entry of the actuator travel time (tt), as time between stops is highly important. Due to position simulation, the controller knows whether an increased or reduced pulse must be output. After supply voltage switch-on, position simulation is at 50%. When the motor actuator was varied by the adjusted travel time in one go, internal calculation occurs, i.e. the position corresponds to the simulation:

Simulation actual position

Internal calculation

Internal calculation always occurs, when the actuator was varied by travel time

tt in one go

variation, internal calculation is cancelled. Unless internal calculation occurred already after self-tuning start, it will occur automatically by closing the actuator once.

Unless the positioning limits were reached within 10 hours, a significant deviation between simulation and actual position may have occurred. In this case, the controller would realize minor internal calculation, i.e. the actuator would be closed by 20 %, and re-opened by 20 % subsequently. As a result, the controller knows that there is a 20% reserve for the attempt.

, independent of manual or automatic mode. When interrupting the

Self-tuning 20 8800 process controller

3.5.4 Self-tuning start

Start condition:

For process evaluation, a stable condition is required. Therefore, the

controller waits until the process has reached a stable condition after self-tuning start. The rest condition is considered being reached, when the process value

oscillation is smaller than ± 0,5% of (rnG.H - rnG.L). For self-tuning start after start-up, a 10% difference from (SP.LO ... SP.Hi)

is required.

Operation

Self-tuning start can be blocked via 8800/8840 configurator®(engineering tool) ( P.Loc).

Strt = 0 Only manual start by pressing keys Ù and È

simultaneously or via interface is possible.

Strt = 1 Manual start by press keys Ù and È simultaneously

via interface and automatic start after power-on and detection of process oscillations.

Ada LED status Signification

blinks Waiting, until process

calms down

lit Self-tuning is running

off Self-tuning not activ

or ended

°C

°F

3.5.5 Self-tuning cancellation

By the operator:

Self-tuning can always be cancelled by the operator. For this, press Ù and È key simultaneously.With controller switch-over to manual mode after self-tuning start, self-tuning is cancelled. When self-tuning is cancelled, the controller will continue operating using the old parameter values.

By the controller:

If the Err LED starts blinking whilst self-tuning is running, successful self-tuning is prevented due to the control conditions. In this case, self-tuning was cancelled by the controller. The controller continues operating with the old parameters in automatic mode. In manual mode it continues with the old controller output value.

3.5.6 Acknowledgement procedures in case of unsuccessful self-tuning

8800 process controller 21 Self-tuning

Operation

1. Press keys Ù and È simultaneously:

2. Press key Ò (if configured):

3. Press key Ù :

Cancellation causes:

r page 15: "Error status self-tuning heating ( ADA.H) and cooling ( ADA.C)"

The controller continues controlling using the old parameters in automatic mode. The Err LED continues blinking, until the self-tuning error was acknowledged in the error list.

The controller goes to manual mode. The Err LED continues blinking, until the self-tuning error was acknowleged in the error list.

Display of error list at extended operating level. After acknowledgement of the error message, the controller continues control in automatic mode using the old parameters.

Self-tuning 22 8800 process controller

3.5.7 Examples for self-tuning attempts

(controller inverse, heating or heating/cooling)

Operation

Start: heating power switched on

Heating power Y is switched off (1).

When the change of process value X was constant during one minute (2), the power is switched on (3). At the reversal point, the self-tuning

100%

Star t r

t reversal point

attempt is finished and the new parameter are used for controlling to

blinks

set-point W.

Start: heating power switched off

The controller waits 1,5 minutes (1). Heating power Y is switched on (2). At the reversal point, the self-tuning attempt is finished and control to the set-point is using the new parameters.

Self-tuning at the set-point a

100%

start r

blinks

t reversal point

The process is controlled to the set-point. With the control deviation constant during a defined time (1) (i.e. constant separation of process value

and set-point), the controller outputs a reduced correcting variable pulse (max. 20%) (2). After determination of the control parameters using the process characteristic (3), control is started using the new parameters (4).

Three-point controller a

The parameter for heating and cooling are

100%

Start r

blinks

determined in two attempts. The heating power is switched on (1). Heating parameters Pb1, ti1, td1 and t1 are determined at the reversal point. Control to the set-point occurs(2). With constant control deviation, the controller provides a

+100%

Y0%

-100%

Start r

t reversal

point

cooling correcting variable pulse (3). After determining its cooling parameters Pb2, ti2, td2 and t2 (4) from the process characteristics , control operation is started using the new parameters (5).

During phase 3, heating and cooling are done simultaneously!

8800 process controller 23 Self-tuning

Operation

3.6 Manual self-tuning

The optimization aid can be used with units on which the control parameters shall be set without self-tuning. For this, the response of process variable x after a step change of correcting variable y can be used. Frequently, plotting the complete response curve (0 to 100%) is not possible, because the process must be kept within defined limits.

Values T

and x

(step change from 0 to 100 %) or ∆t and ∆x (partial step

max

response) can be used to determine the maximum rate of increase v

100%

max

y = correcting variable

= control range Tu = delay time (s) Tg = recovery time (s) X

max

= maximum process value

Xmax

∆∆x

= max. rate of increase of process value

The control parameters can be determined from the values calculated for delay time T

, maximum rate of increase v

, control range Xhand characteristic K

max

according to the formulas given below. Increase Pb1, if line-out to the set-point oscillates.

Manual self-tuning 24 8800 process controller

Operation

Parameter adjustment effects

Parameter Control Line-out of disturbances Start-up behaviour

Pb1 higherincreased damping slower line-out slower reduction of duty cycle

lower reduced damping faster line-out faster reduction of duty cycle

td1 higherreduced damping faster response to disturbances faster reduction of duty cycle

lower increased

damping

slower response to disturbances

slower reduction of duty cycle

Formulas

K = Vmax * Tu controller behavior Pb1 [phy. units] td1 [s] ti1 [s]

PID 1,7*K 2*Tu 2*Tu With 2-point and 3-point controllers,

the cycle time must be adjusted to

t1 / t2 ≤ 0,25 * Tu

PD 0,5 * K Tu OFF

PI 2,6 * K OFF 6*Tu

PKOFF OFF

3-point-stepping 1,7 * K Tu 2 * Tu

3.7 Second PID parameter set

The process characteristic is frequently affected by various factors such as process value, correcting variable and material differences. To comply with these requirements, the 8800 process controller can be switched over between two parameter sets. Parameter sets PArA and PAr.2 are provided for heating and cooling.

Dependent of configuration ( ConF/LOG/Pid.2), switch-over to the second parameter set ( ConF/LOG/Pid.2) is via one of digital inputs di1, di2, di3, key è or interface (OPTION).

Self-tuning is always done using the active parameter set, i.e. the second parameter set must be active for optimizing.

8800 process controller 25 Second PID parameter set

Operation

3.8 Alarm handling

Max. three alarms can be configured and assigned to the individual outputs. Generally, outputs OuT.1... OuT.6 can be used each for alarm signalling. If more than one signal is linked to one output the signals are OR linked. Each of the 3 limit values Lim.1 … Lim.3 has 2 trigger points H.x (Max) and L.x (Min), which can be switched off individually (parameter = “OFF”). Switching difference HYS.x and delay dEl.x of each limit value is adjustable.

Ü Operaing principle absolute alarm

L.1 = OFF

InL.1

H.1

HYS.1

InH.1

LED

H.1 = OFF

InL.1

L.1

HYS.1

LED

InH.1

* Operating principle relative alarm

L.1 = OFF

InL.1

H.1

HYS.1

H.1 = OFF

InL.1

L.1

HYS.1

LED

InH.1

LED

InH.1

L.1

InH.1

H.1

HYS.1

LED

InL.1

H.1

L.1

HYS.1 HYS.1

LED

InH.1

LED

InL.1

HYS.1

LED

1: normally closed ( ConF/ Out.x/O.Act=1 ) 2: normally open ( ConF/ Out.x/O.Act= 0 )

Alarm handling 26 8800 process controller

Operation

The variable to be monitored can be selected seperately for each alarm via configuration The following variables can be monitored:

process value

control deviation xw (process value - set-point)

control deviation xw + suppression after start-up or set-point change

After switching on or set-point changing, the alarm output is suppressed,

until the process value is within the limits for the first time. At the latest after expiration of time 10 ti1, the alarm is activated. (ti1 = integral time 1; parameter r Cntr)

If ti1 is switched off (ti1 = OFF), this is interpreted as Î, i.e. the alarm

is not activated, before the process value was within the limits once. Measured value INP1

Measured value INP2

Measured value INP3

effective set-point Weff

correcting variable y (controller output)

Deviation from SP internal

Process value - x2

If measured value monitoring + alarm status storage is chosen ( ConF / Lim / Fnc.x=2/4), the alarm relay remains switched on until the alarm is resetted in the error list ( Lim 1..3 = 1).

8800 process controller 27 Alarm handling

Operation

3.9 Operating structure

After supply voltage switch-on, the controller starts with the operating levels. The controller status is as before power off.

g g

1199

1200

3 sec.

1199

PArA

para

1199

ConF

para

PASS

1199

CAL

PASS

1199

PArA - level: At PArA - level, the right decimal point of the bottom

display line is lit continuously.

ConF - level: At ConF - level, the right decimal point of bottom

display line blinks

When safety switch Loc is open, only the levels enabled by

PASS

of 8800/8840 configurator (engineering tool). Individual parameters accessible without password must be copied to the extended operating level.

means of 8800/8840 configurator (engineering tool) are visible and accessible by entry of the password also adjusted by means

End

g g

Operating structure 28 8800 process controller

Factory setting:Safety switch Loc closed: all levels accessible without restriction, password PASS = OFF. All levels locked with a password are locked only if safety switch Loc is closed.

4 Configuration level

4.1 Configuration survey

ConF Configuration level

Configuration level

Control and self-tuning

Cntr

SP.Fn I.Fnc I.Fnc I.Fnc Fnc.1 O.Act

C.tYP StYP StYP S.Lin Src.1 Y.1 O.Act O.Act SP.2 Addr C.Fnc S.Lin Corr S.Typ Fnc.2 Y.2 Y.1 Y.1 SP.E PrtY C.dif Corr In.F Corr Src.2 Lim.1 Y.2 Y.2 Y.2 dELY mAn In.F Fnc.3 Lim.2 Lim.1 Lim.1 Y.E dp.Ad C.Act Src.3 Lim.3 Lim.2 Lim.2 mAn bc.up FAIL HC.AL dAc.A Lim.3 Lim.3 C.oFF O2 rnG.L LP.AL LP.AL dAc.A dAc.A m.Loc Unit rnG.H dAc.A HC.AL LP.AL LP.AL Err.r dP CYCL HC.SC HC.AL HC.AL Pid.2 LEd tunE P.End HC.SC HC.SC I.Chg dISP Strt FAi.1 P.End P.End di.Fn C.dEl

Input 1

InP.1

InP.2

Input 2

Input 3

InP.3

Limit value functions

Lim

OUt.1

Output 1

OUt.2

Output 2

O.tYP O.tYP

See output 1

FAi.2 FAi.1 FAi.1 FAi.3 FAi.2 FAi.2

FAi.3 FAi.3 OuT.0 OuT.0 Out.1 Out.1 O.Src O.Src

OUt.3

Output 3

OUt.4

Output 4

Out.5

Output 5

See output 1

Out.6

Output 6

LOGI

L_r bAud

See output 1

Digital inpu ts

Othr

Display, operation,

interface

Adjustment:

The configuration can be adjusted by means of keys ÈÌ .

Transition to the next configuration is by pressing key Ù .

After the last configuration of a group, donE is displayed and followed by

automatic change to the next group

Return to the beginning of a group is by pressing the Ù key for 3 sec.

8800 process controller 29 Configuration survey

Configuration level

4.2 Configuration parameters

Cntr

Name Value range Description Default

SP.Fn

C.tYP

C.Fnc

C.dif

mAn

C.Act

FAIL

Basic configuration of setpoint processing

set-point controller can be switched over to external set-point (-> LOGI/ SP.E)

standard controller with external offset (SP.E)

Calculation of the process value

0 1 2 3

standard controller (process value = x1) ratio controller (x1/x2) difference (x1 - x2) Maximum value of x1and x2. It is controlled with the bigger

value. At sensor failure it is controlled with the remaining actual value.

Minimum value of x1and x2. It is controlled with the smaller value. At sensor failure it is controlled with the remaining actual value.

Mean value (x1, x2). With sensor error, controlling is continued with the remaining process value.

6 Switching between x1 and x2 (-> LOGI/ I.ChG) 7O 8O

function with constant sensor temperature

function with measured sensor temperature

Control behaviour (algorithm)

0 1 2

on/off controller or signaller with one output PID controller (2-point and continuous)

∆ / Y / Off, or 2-point controller with partial/full load switch-over

3 4 5 6

2 x PID (3-point and continuous) 3-point stepping controller 3-point stepping controller with position feedback Yp continuous controller with integrated positioner Output action of the PID controller derivative action

0 1

Derivative action acts only on the measured value. Derivative action only acts on the control deviation

(set-point is also differentiated)

Manual operation permitted

0 1

no yes (r LOGI / mAn)

Method of controller operation

0 1

inverse, e.g. heating direct, e.g. cooling

Behaviour at sensor break

0 1 2

controller outputs switched off y=Y2 y = mean output. The maximum permissible output can be

adjusted with parameter Ym.H. To prevent determination of inadmissible values, mean value formation is only if the control deviation is lower than parameter L.Ym.

Configuration parameters 30 8800 process controller

Configuration level

Name Value range Description Default

rnG.L rnG.H CYCL

tunE

Strt

Adt0

-1999...9999

X0 (low limit range of control) 1 X100 (high limit range of control) 1 Characteristic for 2-point- and 3-point-controllers

0 1 2 3

standard water cooling linear water cooling non-linear with constant cycle (see page 51) Auto-tuning at start-up (see page 16 )

At start-up with step attempt, at set-point with impulse attempt

At start-up and at set-point with impulse attempt. Setting for fast controlled systems (e.g. hot runner control)

2 Always step attempt at start-up

Start of auto-tuning

0 1

Manual start of auto-tuning Manual or automatic start of auto-tuning at power on or

when oscillating is detected Optimization of T1, T2 (only visible with 8800/8840

configurator!)

0 1

Automatic optimization No optimization

-100

1200

1 rnG.L and rnG.H are indicating the range of control on which e.g. the

self-tuning is refering

InP.1

Name Value range Description Default

I.fnc

INP1 function selection

0 1 2 3 4 5

No function (following INP data are skipped) Heating current input External set-point SP.E (switch-over -> LOGI/ SP.E) Position feedback Yp Second process value x2 (ratio, min, max, mean) External positioning value Y.E

(switch-over r LOGI / Y.E)

6 7

No controller input (e.g. limit signalling instead) Process value x1

8800 process controller 31 Configuration parameters

Configuration level

Name Value range Description Default

S.tYP

S.Lin

Corr

In.f

fAI1

-1999...9999

10 18 20 21 22 23 24 30 40 41 42 50 51 52 53

Sensor type selection

0 1 2 3 4 5 6 7 8 9

thermocouple type L (-100...900°C) , Fe-CuNi DIN thermocouple type J (-100...1200°C) , Fe-CuNi thermocouple type K (-100...1350°C), NiCr-Ni thermocouple type N (-100...1300°C), Nicrosil-Nisil thermocouple type S (0...1760°C), PtRh-Pt10% thermocouple type R (0...1760°C), PtRh-Pt13% thermocouple type T (-200...400°C), Cu-CuNi thermocouple type C (0...2315°C), W5%Re-W26%Re thermocouple type D (0...2315°C), W3%Re-W25%Re thermocouple type E (-100...1000°C), NiCr-CuNi

thermocouple type B (0/100...1820°C), PtRh-Pt6% special thermocouple Pt100 (-200.0 ... 100,0 °C) Pt100 (-200.0 ... 850,0 °C) Pt1000 (-200.0 ... 850.0 °C) special 0...4500 Ohm (preset to KTY11-6) special 0...450 Ohm

0...20mA / 4...20mA 1

0...10V / 2...10V 1 special -2,5...115 mV 1 special -25...1150 mV 1 potentiometer 0...160 Ohm 1 potentiometer 0...450 Ohm 1 potentiometer 0...1600 Ohm 1 potentiometer 0...4500 Ohm 1

Linearization (only at S.tYP = 23 (KTY 11-6), 24

(0...450 ), 30 (0..20mA), 40 (0..10V), 41 (0...100mV) and 42 (special -25...1150 mV))

0 1

none Linearization to specification. Creation of linearization table

with 8800/8840 configurator (engineering tool) possible. The characteristic for KTY 11-6 temperature sensors is preset.

Measured value correction / scaling

0 1 2 3

Without scaling Offset correction (at CAL level) 2-point correction (at CAL level) Scaling (at PArA level)

Alternative value for error at INP1 Forcing INP1 (only visible with 8800/8840 configurator!)

0 1

No forcing Forcing via serial interface

OFF

1 with current and voltage input signals, scaling is required (see chapter 5.3)

Configuration parameters 32 8800 process controller

Configuration level

InP.2

Name Value range Description Default

I.Fnc

S.tYP

Corr

In.F

fAI2

Function selection of INP2

0 1 2 3 4 5

no function (subsequent input data are skipped) heating current input External set-point SP.E (switch-over -> LOGI/ SP.E) Position feedback Yp Second process value x2 (ratio, min, max, mean) External positioning value Y.E

(switch-over r LOGI / Y.E)

6 7

no controller input (e.g. transmitter input instead) Process value x1

Sensor type selection

30 31 50 51 52 53

0...20mA / 4...20mA 1

0...50mA AC 1 Potentiometer ( 0...160 Ohm) 1 Potentiometer ( 0...450 Ohm) 1 Potentiometer ( 0...1600 Ohm) 1 Potentiometer ( 0...4500 Ohm) 1 Measured value correction / scaling 0

0 Without scaling 1 Offset correction (at CAL level) 2 2-point correction (at CALlevel) 3 Scaling (at PArA level)

-1999...9999

Alternative value for error at INP2 Forcing INP2 (only visible with 8800/8840 configurator!)

0 1

No forcing Forcing via serial interface

OFF

1 with current and voltage input signals, scaling is required (see chapter 5.3)

InP.3

Name Value range Description Default

I.Fnc

Function selection of INP3

0 1 2 3 4 5

no function (subsequent input data are skipped) heating current input External set-point SP.E (switch-over -> LOGI/ SP.E) Yp input Second process value X2 External positioning value Y.E

(switch-over r LOGI / Y.E)

6 7

no controller input (e.g. transmitter input instead) Process value x1

8800 process controller 33 Configuration parameters

Configuration level

Name Value range Description Default

S.tYP

S.Lin

Corr

In.F

fAI3

-1999...9999

10 18 20 21 22 23 24 30 41 42 50 51 52 53

Sensor type selection

0 1 2 3 4 5 6 7 8 9

0...20mA / 4...20mA 1 special -2,5...115 mV 1 special -25...115 0mV 1 potentiometer 0...160 Ohm 1 potentiometer 0...450 Ohm 1 potentiometer 0...1600 Ohm 1 potentiometer 0...4500 Ohm 1

Linearization

(only at S.tYP = 23,24,30,41 and 42 adjustable)

0 1

none Linearization to specification. Creation of linearization table

with 8800/8840 configurator (engineering tool) possible. The characteristic for KTY 11-6 temperature sensors is preset.

Measured value correction / scaling

(only at S.tYP = 23,24,30,41 and 42 adjustable)

0 1 2 3 4

0 1

Without scaling Offset correction (at CAL level) 2-point correction (at CAL level) Scaling (at PArA level) Automatic calibration (DAC)

Alternative value for error at INP3 Forcing INP3 (only visible with 8800/8840 configurator!)

No forcing Forcing via serial interface

OFF

1 with current and voltage input signals, scaling is required (see chapter 5.3)

Configuration parameters 34 8800 process controller

Configuration level

Lim

Name Value range Description Default

Fnc.1

Src.1

Fnc.2

Function of limit 1

0 1 2

switched off measured value monitoring Measured value monitoring + alarm status storage. A stored

limit value can be reset via error list,

è-key, Ò-key or a

digital input ( -> LOGI/ Err.r)

3 4

signal change (change/minute) signal change and storage (change/minute)

Source of imit 1

0 1 2

process value control deviation xw (process value - set-point) control deviation xw (with suppression after start-up and

set-point change)

After switch-on or set-point changing, the alarm output is suppressed, until the process value is within the limits for the first time. At the latest after elapse of time 10 ti1the alarm is activated (ti1 = integral time 1; parameter r Cntr) If ti1 is switched off (ti1 = 0), this is interpreted as Î , i.e. the alarm is not activated, before the process value was within the limits once.

3 4 5 6 7

measured value INP1 measured value INP2 measured value INP3 effective setpoint Weff correcting variable y (controller output)

8 control variable deviation xw (actual value - internal setpoint)

= deviation alarm to internal setpoint

difference x1 - x2 (utilizable e.g. in combination with process value function “mean value” for recognizing aged thermocouples

Function of limit 2

0 1 2

switched off measured value monitoring Measured value monitoring + alarm status storage. A stored

limit value can be reset via error list,

è-key, Ò-key or a

digital input ( -> LOGI/ Err.r)

3 4

signal change (change/minute) signal change and storage (change/minute)

8800 process controller 35 Configuration parameters

Configuration level

Name Value range Description Default

Src.2

Fnc.3

Source of limit 2

0 1 2

process value control deviation xw (process value - set-point) control deviation xw (with suppression after start-up and

set-point change)

3 4 5 6 7

measured value INP1 measured value INP2 measured value INP3 effective setpoint Weff correcting variable y (controller output)

8 control variable deviation xw (actual value - internal setpoint)

= deviation alarm to internal setpoint

difference x1 - x2 (utilizable e.g. in combination with process value function “mean value” for recognizing aged thermocouples

Function of limit 3

0 1 2

switched off measured value monitoring Measured value monitoring + alarm status storage. A stored

limit value can be reset via error list,

è-key, Ò-key or a

digital input ( -> LOGI/ Err.r)

3 4

signal change (change/minute) signal change and storage (change/minute)

Configuration parameters 36 8800 process controller

Configuration level

Name Value range Description Default

Src.3

HC.AL

LP.AL

dAc.A

Hour

Swit

Source of limit 3

0 1 2

process value control deviation xw (process value - set-point) control deviation xw (with suppression after start-up and

set-point change)

After switch-on or set-point changing, the alarm output is suppressed, until the process value is within the limits for the first time. At the latest after elapse of time 10 ti1 the alarm is activated (ti1 = integral time 1; parameter r Cntr) If ti1 is switched off (ti1 = 0), this is interpreted as Î , i.e. the alarm is not activated, before the process value was within the limits once.

3 4 5 6 7

measured value INP1 measured value INP2 measured value INP3 effective setpoint Weff correcting variable y (controller output)

8 control variable deviation xw (actual value - internal setpoint)

= deviation alarm to internal setpoint

difference x1 - x2 (utilizable e.g. in combination with process value function “mean value” for recognizing aged thermocouples

Alarm heat current function (INP2)

0 1 2

switched off Overload short circuit monitoring Break and short circuit monitoring

Monitoring of control loop interruption for heating

0 1

switched off / inactive active.

If ti1=0 LOOP alarm is inactive!

DAC alarm function

1 OFF...999999 OFF...999999

DAC alarm switched off / inactive DAC alarm active

Operating hours (only visible with 8800/8840 configurator!) Output switching cycles (only visible with 8800/8840

configurator!)

OFF OFF

Out.1

Name Value range Description Default

O.Act

0 1

Y.1

0 1

Method of operation of output OUT1

direct / normally open inverse / normally closed

Controller output Y1

not active active

8800 process controller 37 Configuration parameters

Configuration level

Name Value range Description Default

Y.2

Lim.1

Lim.2

Lim.3

dAc.A

LP.AL

HC.AL

HC.SC

FAi.1

FAi.2

FAi.3

fOut

Controller output Y2

0 1

not active active

Limit 1 signal

0 1

not active active

Limit 2 signal

0 1

not active active

Limit 3 signal

0 1

not active active

Valve monitoring (DAC)

0 1

not active active

Interruption alarm signal (LOOP)

0 1

not active active

Heat current alarm signal

0 1

not active active

Solid state relay (SSR) short circuit signal

0 1

not active active

INP1 error signal

0 1

not active active

INP2 error signal

0 1

not active active

INP3 error signal

0 1

not active aktiv Forcing OUT1 (only visible with 8800/8840 configurator!)

0 1

No forcing Forcing via serial interface

Out.2

Configuration parameters Out.2 = Out.1 except for: Default Y.1 =0 Y.2 =1

Configuration parameters 38 8800 process controller

Configuration level

Out.3

Name Value range Description Default

O.tYP

O.Act

Y.1

Y.2

Lim.1

Lim.2

Lim.3

dAc.A

LP.AL

HC.AL

HC.SC

Signal type selection OUT3

0 1

relay / logic (only visible with current/logic voltage) 0 ... 20 mA continuous (only visible with

current/logic/voltage)

4 ... 20 mA continuous (only visible with current/logic/voltage)

3 4 5

0...10 V continuous (only visible with current/logic/voltage)

2...10 V continuous (only visible with current/logic/voltage) transmitter supply (only visible without OPTION)

Method of operation of output OUT3 (only visible when O.TYP=0)

0 1

direct / normally open inverse / normally closed

Controller output Y1 (only visible when O.TYP=0)

0 1

not active active

Controller output Y2 (only visible when O.TYP=0)

0 1

not active active

Limit 1 signal (only visible when O.TYP=0)

0 1

not active active

Limit 2 signal (only visible when O.TYP=0)

0 1

not active active

Limit 3 signal (only visible when O.TYP=0)

0 1

not active active

Valve monitoring (DAC) (only visible when O.TYP=0)

0 1

not active active

Interruption alarm signal (LOOP) (only visible when O.TYP=0)

0 1

not active active

Heating current alarm signal (only visible when O.TYP=0)

0 1

not active active

Solid state relay (SSR) short circuit signal (only visible when O.TYP=0)

0 1

not active active

8800 process controller 39 Configuration parameters

Configuration level

Name Value range Description Default

FAi.1

FAi.2

FAi.3

Out.0

Out.1

O.Src

fOut

0 1

-1999...9999

0 1 2 3 4 5 6 7 8 9

0 1

INP1 error (only visible when O.TYP=0)

not active active

INP2 error (only visible when O.TYP=0)

not active active

INP3 error (only visible when O.TYP=0)

not active aktiv

Scaling of the analog output for 0% (0/4mA or 0/2V, only visible when O.TYP=1..5)

Scaling of the analog output for 100% (20mA or 10V, only visible when O.TYP=1..5)

Signal source of the analog output OUT3 (only visible when O.TYP=1..5)

not used controller output y1 (continuous) controller output y2 (continuous) process value effective set-point Weff control deviation xw (process value - set-point) measured value position feedback Yp measured value INP1 measured value INP2 measured value INP3 Forcing OUT3 (only visible with 8800/8840 configurator!) No forcing Forcing via serial interface

100

Out.4

Name Value range Description Default

O.tYP

O.Act

Signal type selection OUT4

0 1

relay / logic (only visible with current/logic voltage) 0 ... 20 mA continuous (only visible with

current/logic/voltage)

4 ... 20 mA continuous (only visible with current/logic/voltage)

3 4 5

0...10 V continuous (only visible with current/logic/voltage)

2...10 V continuous (only visible with current/logic/voltage) transmitter supply (only visible without OPTION)

Method of operation of output OUT4 (only visible when O.TYP=0)

0 1

direct / normally open inverse / normally closed

Configuration parameters 40 8800 process controller

Configuration level

Name Value range Description Default

Y.1

Y.2

Lim.1

Lim.2

Lim.3

dAc.A

LP.AL

HC.AL

HC.SC

FAi.1

FAi.2

FAi.3

Out.0

Out.1

0 1

-1999...9999

Controller output Y1 (only visible when O.TYP=0)

not active active

Controller output Y2 (only visible when O.TYP=0)

not active active

Limit 1 signal (only visible when O.TYP=0)

not active active

Limit 2 signal (only visible when O.TYP=0)

not active active

Limit 3 signal (only visible when O.TYP=0)

not active active

Valve monitoring (DAC) (only visible when O.TYP=0)

not active active

Interruption alarm signal (LOOP) (only visible when O.TYP=0)

not active active

Heat current alarm signal (only visible when O.TYP=0)

not active active

Solid state relay (SSR) short circuit signal (only visible when O.TYP=0)

not active active

INP1 error (only visible when O.TYP=0)

not active active

INP2 error (only visible when O.TYP=0)

not active active

INP3 error (only visible when O.TYP=0)

not active aktiv

Scaling of the analog output for 0% (0/4mA or 0/2V, only visible when O.TYP=1..5)

Scaling of the analog output for 100% (20mA or 10V, only visible when O.TYP=1..5)

100

8800 process controller 41 Configuration parameters

Configuration level

Name Value range Description Default

O.Src

fOut

Out.5

Configuration parameters Out.2 = Out.1 except for: Default Y.1 =0 Y.2 =0

Signal source of the analog output OUT4 (only visible when

O.TYP=1..5)

0 1 2 3 4 5 6

0 1

not used controller output y1 (continuous) controller output y2 (continuous) process value effective set-point Weff control deviation xw (process value - set-point) measured value position feedback Yp Forcing OUT1 (only visible with 8800/8840 configurator!) No forcing Forcing via serial interface

Out.6

Configuration parameters Out.2 = Out.1 except for: Default Y.1 =0 Y.2 =0

Method of operation and usage of output Out.1 to Out.6:

Is more than one signal chosen active as source, those signals are OR-linked.

LOGI

Name Value range Description Default

L_r

SP.2

Local / Remote switching (Remote: adjusting of all values by front keys is blocked)

0 1 2 3 4 5

no function (switch-over via interface is possible) always active DI1 switches DI2 switches (only visible with OPTION) DI3 switches (only visible with OPTION) è - key switches

Switching to second setpoint SP.2

0 2 3 4 5

no function (switch-over via interface is possible) DI1 switches DI2 switches (only visible with OPTION) DI3 switches (only visible with OPTION) è - key switches

Configuration parameters 42 8800 process controller

Configuration level

Name Value range Description Default

SP.E

Y.E

mAn

C.oFF

m.Loc

Switching to external setpoint SP.E

0 1 2 3 4 5

no function (switch-over via interface is possible) always active DI1 switches DI2 switches (only visible with OPTION) DI3 switches (only visible with OPTION) è - key switches

Y/Y2 switching

0 2 3 4 5 6

no function (switch-over via interface is possible) DI1 switches DI2 switches (only visible with OPTION) DI3 switches (only visible with OPTION)

è - key switches Ò - key switches

Switching to fixed control output Y.E

0 1 2 3 4 5 6

no function (switch-over via interface is possible) always activated (manual station) DI1 switches DI2 switches (only visible with OPTION) DI3 switches (only visible with OPTION)

è - key switches Ò - key switches

Automatic/manual switching

0 1 2 3 4 5 6

no function (switch-over via interface is possible) always activated (manual station) DI1 switches DI2 switches (only visible with OPTION) DI3 switches (only visible with OPTION)

è - key switches Ò - key switches

Switching off the controller

0 2 3 4 5 6

no function (switch-over via interface is possible) DI1 switches DI2 switches (only visible with OPTION) DI3 switches (only visible with OPTION)

è - key switches Ò - key switches

Blockage of hand function

0 2 3 4 5

no function (switch-over via interface is possible) DI1 switches DI2 switches (only visible with OPTION) DI3 switches (only visible with OPTION) è - key switches

8800 process controller 43 Configuration parameters

Configuration level

Name Value range Description Default

Err.r

Pid.2

I.Chg

di.Fn

fDI1

fDI2

fDI3

Reset of all error list entries

0 2 3 4 5 6

no function (switch-over via interface is possible) DI1 switches DI2 switches (only visible with OPTION) DI3 switches (only visible with OPTION)

è - key switches Ò - key switches

Switching of parameter set (Pb, ti, td)

0 2 3 4 5

no function (switch-over via interface is possible) DI1 switches DI2 switches (only visible with OPTION) DI3 switches (only visible with OPTION) è - key switches

Switching of the actual process value between Inp1 and X2

0 2 3 4 5

no function (switch-over via interface is possible) DI1 switches DI2 switches (only visible with OPTION) DI3 switches (only visible with OPTION) è - key switches

Function of digital inputs (valid for all inputs)

0 1 2

direct inverse toggle key function Forcing di1 (only visible with 8800/8840 configurator!)

0 1

No forcing Forcing via serial interface Forcing di2 (only visible with 8800/8840 configurator!)

0 1

No forcing Forcing via serial interface Forcing di3 (only visible with 8800/8840 configurator!)

0 1

No forcing Forcing via serial interface

othr

Name Value range Description Default

bAud

Addr

0 1 2 3

1...247

Baudrate of the interface (only visible with OPTION)

2400 Baud 4800 Baud 9600 Baud 19200 Baud

Address on the interace (only visible with OPTION)

Configuration parameters 44 8800 process controller

Configuration level

Name Value range Description Default

PrtY

dELY

Unit

LED

dISP C.dEl

dP.AD bc.up

FrEq

ICof

Data parity on the interface (only visible with OPTION)

0 1 2 3

0...200

no parity (2 stop bits) even parity odd parity no parity (1 stopbit)

Delay of response signal [ms] (only visible with OPTION) Entering parameter for O2in ppm or %

0 1

Parameter for O2-function in ppm Parameter for O2-function in %

Unit

0 1 2

without unit °C °F

Decimal point (max. number of digits behind the decimal point)

0 1 2 3

no digit behind the decimal point 1 digit behind the decimal point 2 digits behind the decimal point 3 digits behind the decimal point

Function allocation of status LEDs1/2/3/4

10 11 12 13 14 20 21 22

OUT1, OUT2, OUT3, OUT4 Heating, alarm 1, alarm 2, alarm 3 Heating, cooling, alarm 1, alarm 2 Cooling, heating, alarm 1, alarm 2 Bus error Y1, Y2, track1, track2 Y2, Y1, track1, track2 track1, track2, track3, track4

0...10 Display luminosity

0..200

Modem delay [ms]

Additional delay time, before the received message is evaluated in the Modbus. This time is required, unless messages are transferred continuously during modem transmission.

0...126

Profibus address Behaviour as backup controller

0 1

No backup functionality With backup functionality Switching 50 Hz / 60 Hz (only visible with 8800/8840

configurator!)

0 1

50 Hz 60 Hz Block controller off (only visible with 8800/8840

configurator!)

0 1

Released Blocked

0 0

5 0

126

8800 process controller 45 Configuration parameters

Configuration level

Name Value range Description Default

IAda

IExo

ILat Suppression error storage 0

0 Released 1 Blocked

Pass

IPar

ICnf

ICal

CDis3

TDis3

PDis3

T.dis3 T.InF1 T.InF2

t.PrG01 t.PrG02

www

t.PrG16

0 1

OFF...9999

0 1

0 1 2 3 4

2...60

1 2 3 4 5

8 characters 8 characters 8 characters 8 characters 8 characters

8 characters

Block auto tuning (only visible with 8800/8840 configurator!)

Released Blocked Block extended operating level (only visible with

8800/8840 configurator!) Released Blocked

Password (only visible with 8800/8840 configurator!) Block parameter level (only visible with 8800/8840

configurator!) Released Blocked Block configuration level (only visible with 8800/8840

configurator!) Released Block Block calibration level (only visible with 8800/8840

configurator!) Released Blocked Display 3 controller operating level (only visible with

8800/8840 configurator!) No value / only text Display of value Output value as bargraph Control deviation as bargraph Process value as bargraph Display 3 display alternation time [s] (only visible with

8800/8840 configurator!) display 3 programmer-operating level Segm.-No., Segm.-Type, Progr.-remaining time Segm.-No., Segm.-Type, Segm.-remaining time Segm.-No., Segm.-Type, net-time Segm.-No., Segm.-Type, Progr.-remaining time Segm.-No., Segm.-Type, Segm.-remaining time Segm.-No., Segm.-Type, net-time

Text display 3 Text Inf.1 Text Inf.2

Text Program 1 Text Program 2

Text Program16

OFF

Configuration parameters 46 8800 process controller

Configuration level

Lin (only visible with 8800/8840 configurator

Name Value range Description Default

Lin

In.1

Ou.1

In.2

Ou.2

: :

In.16

Ou.16

-999.0..99999

0,001...9999 Output value 1

-999.0..99999 Input value 2

0,001...9999 Output value 2

: :

-999.0..99999 Input value 16

0,001...9999 Output value 1 6

Linearization for inputs INP1 or INP3

Access to this table is always with selection special thermocouple for InP.1 or InP.3or with setting S.Lin = 1: special linearization for linearization.

Default: KTY 11-6 (0...4,5 kOhm)

Input value 1

The signal is in [µV] or in [[] dependent of input type

Signal assigned to In.1

The signal is in [µV] or in [[] dependent of input type

Signal assigned to In.2

: :

The signal is in [µV] or in [[] dependent of input type

Signal assigned to In.16

1036

-49,94

1150

-38,94

: :

4470

150,0

Resetting the controller configuration to factory setting (Default)

r chapter 11.1 (page 82)

8800/8840 configurator - the engineering tool for the West controller series

3 engineering tools with different functionality facilitating 8800 process controller configuration and parameter setting are available (see chapter 9: Accessory equipment with ordering information). In addition to configuration and parameter setting, 8800/8840 configurator is used for data acquisition and offers long-term storage and print functions.

8800/8840 configurator is connected to 8800 process controller via the front-panel interface by means of PC (Windows 95 / 98 / NT) and a PC adaptor. Description 8800/8840 configurator: see chapter 8: 8800/8840 configurator (page 74).

8800 process controller 47 Configuration parameters

Configuration level

4.3 Set-point processing

The set-point processing structure is shown in the following picture:

WEST

ProcessController

Programmer

external set-point

2nd set-point

Index:

Ü * Ö

8800

Xeff

°C

°F

: int/ext-setpoint switching : configuration : / switching

SP SP.2

Internal set-point

SP.E

SP.2

SP.Fn

Limiting

SP.Lo

SP.Hi

Ramp

r.SP

Effective set-point

-LED

The ramp starts at process value with the following switchings:

- int / ext-setpoint switching

- / switching

SP SP.2

- Manual-/ Automatic switching

- at power on

4.3.1 Set-point gradient / ramp

To prevent set-point step changes, parameter

r set-point r r.SPcan be adjusted

to a maximum rate of change. This gradient is effective in positive and negative direction..

With parameter r.SP set to OFF (default), the gradient is switched off and set-point changes are realized directly.

(for parameter: see page48 )

Set-point processing 48 8800 process controller

4.4 Switching behaviuor

[%]

With 8800 process controller, configuration parameter CYCL (ConF/ Cntr/ CYCL) can be used for matching the cycle time of 2-point and 3-point

controllers. This can be done using the following 4 methods.

4.4.1 Standard ( CyCl= 0 )

The adjusted cycle times t1 and t2 are valid for 50% or -50% correcting variable. With very small or very high values, the effective cycle time is extended to prevent unreasonably short on and off pulses. The shortest pulses result from ¼x t1 or¼x t2. The characteristic curve is also called “bath tub curve”

T/T

6,0

5,0

Configuration level

4,0

3,0

2,0

relative cycle duration

1,0

0,0

5 101520253035404550556065707580859095

Controller output

Parameters to be adjusted: t1 : min. cycle time 1 (heating) [s] ( PArA/ Cntr) t2 : min. cycle time 2 (cooling) [s]

4.4.2 Switching attitude linear ( CyCl= 1 )

For heating (Y1), the standard method (see chapter 4.4.1) is used. For cooling (Y2), a special algorithm for cooling with water is used. Generally, cooling is enabled only at an adjustable process temperature (E.H2O), because low temperatures prevent evaporation with related cooling, whereby damage to the plant is avoided. The cooling pulse length is adjustable using parameter t.on and is fixed for all output values. The “off” time is varied dependent of output value. Parameter t.off is used for determining the min “off” time. For output of a shorter off pulse, this pulse is suppressed, i.e. the max. effective cooling output value is calculated according to formula t.on /(t.on + t.off) w 100%.

-6%

4xt1

3xt1

2xt1

t.offt.on

-10%

-20%

-30%

-50%

-67%

-80%

-100%

8800 process controller 49 Switching behaviuor

Configuration level

]

Parameters to be adjusted: E.H2O: minimum temperature for water cooling ( PArA / Cntr) t.on: pulse duration water cooling

t.off: minimum pause water cooling

4.4.3 Switching attitude non-linear ( CyCl= 2 )

With this method, the cooling power is normally much higher than the heating power, i.e. the effect on the behaviour during transition from heating to cooling may be negative. The cooling curve ensures that the control intervention with 0 to -70% correcting variable is very weak. Moreover, the correcting variable increases very quickly to max. possible cooling. Parameter F.H2O can be used for changing the characteristic curve. The standard method (see section 4.4.1) is also used for heating. Cooling is also enabled dependent of process temperature .

t.offt.on

-82%

-87%

Parameter:

t.on = 0.4 sec t.off = 0.2 sec

-90%

-92%

-95%

-67%

-80%

-100%

Water cooling non-linear, =1F.H2O

Effective controller output

-100 -95 -90 -85 -80 -75 -70 -65 -60 -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5

Parameters to be adjusted: F.H2O: adaptation of (non-linear) characteristic

Water cooling non-linear, =2F.H2O Water cooling non-linear, =0,5F.H2O Water cooling linear

Controller output[%

( PArA / Cntr) Water cooling

t.on: Pulse duration water cooling t.off: min. pause water cooling E.H2O: min. temperature for water cooling

Switching behaviuor 50 8800 process controller

4.4.4 Heating and cooling with constant period ( CyCl= 3 )

Configuration level

1 and t2 are met in the overall

output range . To prevent unreasonably short pulses, parameter

t1 t2/

tp is used for adjusting the shortest

pulse duration. With small correcting

50%

30%

20%

values which require a pulse shorter than the value adjusted in tp, this

pulse is suppressed. However, the controller stores the pulse and

t1 t2/

totalizes further pulses, until a pulse of duration tp can be output.

50%

70%

80%

Parameters to be adjusted: t1 : Min. cycle time 1 (heating) [s] ( PArA/ Cntr) t2 : min. cycle time 2 (cooling) [s]

tp: min. pulse length [s]

10%

90%

8800 process controller 51 Switching behaviuor

Configuration level

4.5 Configuration examples

4.5.1 On-Off controller / Signaller (inverse)

SP.LO SP

SP.Hi

InH.1InL.1

InP.1Ê

100%

Out.1Â

ConF / Cntr: SP.Fn = 0set-point controller

C.Fnc = 0signaller with one output C.Act = 0inverse action

(e.g. heating applications)

ConF / Out.1: O.Act = 0action Out.1 direct

Y.1 =1control output Y1 active PArA / Cntr: Hys.l = 0...9999 switching difference below SP PArA / Cntr: Hys.H = 0...9999 switching difference above SP PArA / SEtP: SP.LO = -1999...9999 set-point limit low for Weff

SP.Hi = -1999...9999 set-point limit high for Weff

For direct signaller action, the controller action must be changed (ConF / Cntr / C.Act = 1 )

HYS.HHYS.L

process value

setpoint

output

Configuration examples 52 8800 process controller

4.5.2 2-point controller (inverse)

Configuration level

SP.LO SP

SP.Hi

InH.1InL.1

InP.1Ê

100%

PB1

Out.1Â

ConF / Cntr: SP.Fn = 0 set-point controller

C.Fnc = 1 2-point controller (PID) C.Act = 0 inverse action

(e.g. heating applications)

ConF / Out.1: O.Act = 0 action Out.1 direct

Y.1 = 1 control output Y1 active

PArA / Cntr: Pb1 = 1...9999 proportional band 1 (heating)

in units of phys. quantity (e.g. °C)

ti1 = 0,1...9999 integral time 1 (heating) in sec. td1 = 0,1...9999 derivative time 1 (heating) in sec. t1 = 0,4...9999 min. cycle time 1 (heating)

PArA / SEtP: SP.LO = -1999...9999 set-point limit low for Weff

SP.Hi = -1999...9999 set-point limit high for Weff

For direct action, the controller action must be changed (ConF / Cntr / C.Act = 1 ).

setpoint

process value

output

8800 process controller 53 Configuration examples

Configuration level

4.5.3 3-point controller (relay & relay)

SP.LO SP

SP.Hi

InH.1InL.1

InP.1Ê

100%

Out.1Â

PB1

PB2

100%

Out.2Â

ConF / Cntr: SP.Fn = 0 set-point controller

C.Fnc = 3 3-point controller (2xPID) C.Act = 0 action inverse

(e.g. heating applications)

ConF / Out.1: O.Act = 0 action Out.1 direct

Y.1 = 1 control output Y1 active Y.2 = 0 control output Y2 not active

ConF / Out.2: O.Act = 0 action Out.2 direct

Y.1 = 0 control output Y1 not active Y.2 = 1 control output Y2 active

PArA / Cntr: Pb1 = 1...9999 proportional band 1 (heating)

in units of phys. quantity (e.g. °C)

Pb2 = 1...9999 proportional band 2 (cooling)

in units of phys. quantity (e.g. °C)

ti1 = 0,1...9999 integral time 1 (heating) in sec. ti2 = 0,1...9999 derivative time 2 (cooling) in sec. td1 = 0,1...9999 integral time 1 (heating) in sec. td2 = 0,1...9999 derivative time 2 (cooling) in sec. t1 = 0,4...9999 min. cycle time 1 (heating) t2 = 0,4...9999 min. cycle time 2 (cooling) SH = 0...9999 neutr. zone in units of phys.quantity

PArA / SEtP: SP.LO = -1999...9999 set-point limit low for Weff

SP.Hi = -1999...9999 set-point limit high for Weff

Configuration examples 54 8800 process controller

4.5.4 3-point stepping controller (relay & relay)

Configuration level

SP.LO SP

SP.Hi

InH.1InL.1

InP.1Ê

100%

Out.1Â

PB1

100%

Out.2

ConF / Cntr: SP.Fn = 0 set-point controller

C.Fnc = 4 3-point stepping controller C.Act = 0 inverse action

(e.g. heating applications)

ConF / Out.1: O.Act = 0 action Out.1 direct

Y.1 = 1 control output Y1 active Y.2 = 0 control output Y2 not active

ConF / Out.2: O.Act = 0 action Out.2 direct

Y.1 = 0 control output Y1 not active Y.2 = 1 control output Y2 active

PArA / Cntr: Pb1 = 1...9999 proportional band 1 (heating)

in units of phys. quantity (e.g. °C)

ti1 = 0,1...9999 integral time 1 (heating) in sec. td1 = 0,1...9999 derivative time 1 (heating) in sec. t1 = 0,4...9999 min. cycle time 1 (heating) SH = 0...9999 neutral zone in units of phy. quantity tP = 0,1...9999 min. pulse length in sec. tt = 3...9999 actuator travel time in sec.

PArA / SEtP: SP.LO = -1999...9999 set-point limit low for Weff

SP.Hi = -1999...9999 set-point limit high for Weff

For direct action of the 3-point stepping controller, the controller output action must be changed ( ConF / Cntr / C.Act = 1 ).

setpoint

process value

output 1

output 2

8800 process controller 55 Configuration examples

Configuration level

4.5.5 Continuous controller (inverse)

SP.LO SP

SP.Hi

InH.1InL.1

InP.1Ê

20 mA

PB1

Out.3Â

0/4 mA

ConF / Cntr: SP.Fn = 0 set-point controller

C.Fnc = 1 continuous controller (PID) C.Act = 0 inverse action

(e.g. heating applications)

ConF / Out.3: O.tYP = 1 / 2 Out.3 type ( 0/4 … 20mA )

Out.0 = -1999...9999 scaling analog output 0/4mA Out.1 = -1999...9999 scaling analog output 20mA

PArA / Cntr: Pb1 = 1...9999 proportional band 1 (heating)

in units of phys. quantity (e.g. °C)

ti1 = 0,1...9999 integral time 1 (heating) in sec. td1 = 0,1...9999 derivative time 1 (heating) in sec. t1 = 0,4...9999 min. cycle time 1 (heating)

PArA / SEtP: SP.LO = -1999...9999 set-point limit low for Weff

SP.Hi = -1999...9999 set-point limit high for Weff

g g

For direct action of the continuous controller, the controller action must be changed ( ConF / Cntr / C.Act = 1 ). To prevent control outputs Out.1 and Out.2 of the continuous controller from switching simultaneously, the control function of outputs Out.1 and Out.2 must be switched off ( ConF / Out.1 and Out.2 / Y.1 and Y.2 = 0 ).

Configuration examples 56 8800 process controller

Configuration level

4.5.6

∆ - Y - Off controller / 2-point controller with pre-contact

SP.LO SP

SP.Hi

InH.1InL.1

InP.1Ê

100%

PB1

Out.1Â

Out.2Â

ConF / Cntr: SP.Fn = 0 set-point controller

C.Fnc = 2 ∆ -Y-Off controller C.Act = 0 inverse action

ConF / Out.1: O.Act = 0 action Out.1 direct

Y.1 = 1 control output Y1 active Y.2 = 0 control output Y2 not active

ConF / Out.2: O.Act = 0 action Out.2 direct

Y.1 = 0 control output Y1 not active Y.2 = 1 control output Y2 active

PArA / Cntr: Pb1 = 1...9999 proportional band 1 (heating)

ti1 = 0,1...9999 integral time 1 (heating) in sec. td1 = 0,1...9999 derivative time 1 (heating) in sec. t1 = 0,4...9999 min. cycle time 1 (heating) SH = 0...9999 switching difference

d.SP

(e.g. heating applications)

in units of phys. quantity (e.g. °C)

d.SP = -1999...9999 trigg. point separation suppl. cont.

∆ / Y / Off in units of phys. quantity

PArA / SEtP: SP.LO = -1999...9999 set-point limit low for Weff

SP.Hi = -1999...9999 set-point limit high for Weff

8800 process controller 57 Configuration examples

Configuration level

4.5.7 8800 process controller with measured value output

phys.

quantity

Out.1

phys. quantity

90...250VAC 24VUC

OUT3

OUT4

mA / V

Out.0

0/4mA

0/2V

}

4 5 6

7 8 9

10 11 12

13 14

20mA

10V

1 2 3

4 5 6 7 8 9

10 11 12

13 14

(16)

INP1

ConF / Out.3 / 4: O.tYP = 1 Out.3/ 4 0...20mA continuous

= 2 Out.3/ 4 4...20mA continuous = 3 Out.3/ 4 0...10V continuous = 4 Out.3/ 4 2...10V continuous

Out.0 = -1999...9999 scaling Out.3/ 4

for 0/4mA or 0/2V

Out.1 = -1999...9999 scaling Out.3/ 4

for 20mA or 10V

O.Src = 3 signal source for Out.3/ 4 is

the process value

Configuration examples 58 8800 process controller

Configuration level

4.5.8 Continuous controller with integrated positioner ( Cntr/ C.Fnc = 6 )

INP.1

INP.2

Master controller

Ypi d

Ycontinuous

Position controller

Y. 1

Y. 2

OUT.4

OUT.1

OUT.2

This is basically a cascade. A tracking controller with three-point stepping behaviour which operates with Yp as process value (INP.2 / INP.3) is used with the continuous controller.

ConF / Cntr SP.Fn = 0 Setpoint controller

C.Fnc = 6 Continuous controller with

integrated positioner

C.Act = 0 Direction of operation invers

(e.g. heating)

ConF / InP.2: I.Fnc = 3 Position featback Yp

S.typ = 50 Sensor e.g. potentiometer 0..160 Ω

ConF / Out.1: O.Act = 0 Direction of operation Out.1 direct

Y.1 = 1 Controller output Y1 activ Y.2 = 0 Controller output Y2 not activ

ConF / Out.2: O.Act = 0 Direction of operation Out.2 direct

Y.1 = 0 Controller output Y1 not activ Y.2 = 1 Controller output Y2 activ

PArA / Cntr: Pb1 = 0,1...9999 Proportional band 1 (heating)

in phys. units (e.g. °C)

ti1 = 1...9999 Integral action time 1 (heating)

in sec.

td1 = 1...9999 Derivative action time t 1 (heating)

in sec.

t1 = 0,4...9999 Minimal cycle time 1 (heating) SH = 0...9999 Neutral zone in phys. units (e.g.°C)

8800 process controller 59 Configuration examples

Parameter setting level

5 Parameter setting level

5.1 Parameter survey

PArA Parameter setting level

Cntr Control and

self-tuning

Pb1 Pb12 SP.Lo InL.1 Inl.2 InL.3 L.1 Pb2 Pb22 SP.Hi OuL.1 OuL.2 OuL.3 H.1 ti1 ti12 SP.2 InH.1 InH.2 InH.3 HYS.1 ti2 ti22 r.SP OuH.1 OuH.2 OuH.3 dEl.1 td1 td12 tF.1 tF.2 tF.3 L.2 td2 td22 E.tc E.tc H.2 t1 HYS.2 t2 dEl.2 SH L.3 Hys.l H.3 Hys.H HYS.3 d.SP dEl.3 tP HC.A tt Y.Lo Y.Hi Y2 Y0 Ym.H L.Ym E.H2O t.on t.off FH2 oFFS tEmp

PAr.2

2. set of parameters

SEtP Set-point and

process value

InP.3 Input 3

InP.1 Input 1

InP.2 Input 2

Lim

Limit value functions

End

Adjustment:

The parameters can be adjusted by means of keys ÈÌ

Transition to the next parameter is by pressing key Ù

After the last parameter of a group, donE is displayed, followed by

automatic change to the next group.

Return to the beginning of a group is by pressing the Ù key for 3 sec. If for 30 sec. no keypress is excecuted the controler returns to the process

value and setpoint display ( Time Out = 30 sec. )

Parameter survey 60 8800 process controller

Parameter setting level

5.2 Parameters

Cntr

Name Value range Description Default

Pb1 Pb2 ti1 ti2 td1 td2

Hys.l Hys.H

d.SP

tP tt

Y2 Y.Lo Y.Hi

Y.0 Ym.H L.Ym

E.H2O

t.on

t.oFF

F.H2O

oFFS tEmp

1...9999 1

0,1...9999

0,4...9999

0...9999

-1999...9999

0,1...9999

3...9999

-100...100

-120...120

-100...100

0...9999

-1999...9999

0,1...9999

1...9999

0,1...9999

-120...120

0...9999

Proportional band 1 (heating) in phys. dimensions (e.g. °C) Proportional band 2 (cooling) in phys. dimensions (e.g. °C) Integral action time 1 (heating) [s] Integral action time 2 (cooling) [s] Derivative action time 1 (heating) [s] Derivative action time 2 (cooling) [s] Minimal cycle time 1 (heating) [s]. The minimum impulse is

1/4xt1 Minimal cycle time 2 (heating) [s]. The minimum impulse is

1/4xt2 Neutral zone or switching differential for on-off control

[phys. dimensions) Switching difference Low signaller [engineering unit] Switching difference High signaller [engineering unit]

Trigger point seperation for additional contact ∆ /Y/Off [phys. dimensions]

Minimum impulse [s] Motor travel time [s]

2. correcting variable Lower output limit [%] Upper output limit [%]

2. correcting variable Working point for the correcting variable [%] Limitation of the mean value Ym [%] Max. deviation xw at the start of mean value calculation

[phys. dimensions] Min. temperature for water cooling. Below the set

temperature no water cooling happens Impulse lenght for water cooling. Fixed for all values of

controller output.The pause time is varied. Min. pause time for water cooling. The max. effective

controller output results from t.on/(t.on+t.off)·100% Modification of the (non-linear) water cooling characteristic

(see page 50) Zero offset Sensor temperature (in engineering units e.g. °C)

With oxygen measurement (O

) (see page 70)

100

180

100

OFF

100

750

1 Valid for ConF/ othr/ dP = 0. With dP = 1 / 2 / 3 also 0,1 / 0,01 /

0,001 is possible.

8800 process controller 61 Parameters

Parameter setting level

PAr.2

Name Value range Description Default

Pb12

Pb22

Ti22 Ti12 Td12 Td22

1...9999 1

0,1...9999

SEtP

Name Value range Description Default

SP.LO SP.Hi

SP.2 r.SP

-1999...9999

0...9999

-1999...9999

Proportional band 1 (heating) in phys. dimensions (e.g. °C),

2. parameter set Proportional band 2 (cooling) in phys. dimensions (e.g. °C),

2. parameter set Integral action time 2 (cooling) [s], 2. parameter set Integral action time 1 (heating) [s], 2. parameter set Derivative action time 1 (heating) [s], 2. parameter set Derivative action time 2 (cooling) [s], 2. parameter set

Set-point limit low for Weff Set-point limit high for Weff Set-point 2. Set-point gradient [/min] Set-point (only visible with 8800/8840 configurator!)

100

180

-100

1200

OFF

SP.LO and SP.Hi should be within the limits of rnGH and rnGL see configuration r Controller page17

InP.1

Name Value range Description Default

InL.1 OuL.1 InH.1 OuH.1

t.F1

Etc.1

-1999...9999

0,0...9999

0...100 (°C)

32...212 (°F)

Input value for the lower scaling point Displayed value for the lower scaling point Input value for the upper scaling point Displayed value for the lower scaling point Filter time constant [s] External cold-junction reference temperature (external TC)

0,5

OFF

InP.2

Name Value range Description Default

InL.2 OuL.2 InH.2 OuH.2

-1999...9999

Input value for the lower scaling point Displayed value for the lower scaling point Input value for the upper scaling point Displayed value for the upper scaling point

1 Valid for ConF/ othr/ dP = 0. With dP = 1 / 2 / 3 also 0,1 / 0,01 /

0,001 is possible.

Parameters 62 8800 process controller

Parameter setting level

Name Value range Description Default

t.F2

0,0...999,9

Filter time constant [s]

0,5

InP.3

Name Value range Description Default

InL.3 OuL.3 InH.3 OuH.3

t.F3

Etc.3

-1999...9999

0,0...999,9

0...100 (°C)

32...212 (°F

Input value for the lower scaling point Displayed value for the lower scaling point Input value for the upper scaling point Displayed value for the upper scaling point Filter time constant [s] External cold-junction reference temperature (external TC)

0,5

OFF

Lim

Name Value range Description Default

-1999...9999

0...9999

-1999...9999

0...9999

-1999...9999

0...9999

Lower limit 1 Upper limit 1 Hysteresis limit 1 Alarm delay from limit value 1 Lower limit 2 OFF Upper limit 2 OFF Hysteresis limit 2 Alarm delay from limit value 2 Lower limit 3 Upper limit 3 Hysteresis limit 3 Alarm delay from limit value 3

L.1

H.1

HYS.1 dEl.1

L.2

H.2

HYS.2 dEl.2

L.3

H.3

HYS.3 dEl.3

Resetting the controller configuration to factory setting (Default) r chapter 11.1 (page 82)

-10

OFF

8800 process controller 63 Parameters

Parameter setting level

5.3 Input scaling

When using current, voltage or resistance signals as input variables for InP.1, InP.2 or/and InP.3 scaling of input and display values at parameter setting level

is required. Specification of the input value for lower and higher scaling point is in the relevant electrical unit (mA/V/Ω).

phys.

quantity

OuH.x

mA / V

OuL.x

5.3.1 Input Inp.1 and InP.3

Parameters InL.x,OuL.x, InH.x and OuH.x are only visible if ConF / InP.x/Corr = 3 is chosen.

S.tYP Input signal InL.x OuL.x InH.x OuH.x

(0...20mA)

(0...10V)

0 … 20 mA 0 any 20 any 4 … 20 mA 4 any 20 any

0 … 10 V 0 any 10 any 2 … 10 V 2 any 10 any

In addition to these settings, InL.x and InH.x can be adjusted in the range (0...20mA / 0...10V / Ω) determined by selection of S.tYP .

InL.x

InH.x

phys. quantity

mA/V

For using the predetermined scaling with thermocouple and resistance thermometer (Pt100), the settings for InL.x and OuL.x and for InH.x and OuH.x must have the same value.

Input scaling changes at calibration level (r page 65) are displayed by input scaling at parameter setting level. After calibration reset (OFF), the scaling parameters are reset to default.

5.3.2 Input InP.2

S.tYP Input signal InL.2 OuL.2 InH.2 OuH.2

30 0 … 20 mA 0 any 20 any 31 0 … 50 mA 0 any 50 any

In addition to these settings, InL.2 and InH.2 can be adjusted in the range (0...20/ 50mA/Ω) determined by selection of S.tYP.

Input scaling 64 8800 process controller

Calibration level

6 Calibration level

Measured value correction ( CAL) is only visible if ConF / InP.1 / Corr = 1 or 2 is chosen.

The measured value can be matched in the calibration menu ( CAL). Two methods are available:

Offset correction

( ConF/ InP.1 / Corr =1 ):

possible on-line at the

process

display

OuL.1

standard setting

offset correction

new

2-point correction

( ConF/ InP.1 / Corr = 2 ):

is possible off-line with process value simulator

OuL.1old

display

OuH.1

old

OuH.1

new

InL.1

standard setting

2-point correction

8800 process controller 65

OuL.1

OuL.1old

new

InL.1

InH.1

Calibration level

Offset correction ( ConF/ InP.1 / Corr =1 ):

1199

°C

°F

1200

para func Ada

Err

SP.E

SP.2

3 sec.

PArA

CAL

InP.1

InL.1: The input value of the scaling point is displayed.

The operator must wait, until the process is at rest. Subsequently, the operator acknowledges the input value by pressing key Ù.

OuL.1: The display value of the scaling point is displayed.

Before calibration, OuL.1 is equal to InL.1. The operator can correct the display value by pressing keys ÈÌ . Subsequently, he confirms the display value by pressing key Ù.

InL.1

OuL.1

End

È Ì

66 8800 process controller

2-point correction ( ConF/ InP.1 / Corr = 2):

1199

°C

°F

1200

para func

Ada

Err

SP.E

SP.2

3 sec.

PArA

ConF

CAL

InP.1

È Ì

InP.2

È Ì

InL.1

InL1

OuL.1

InH.1

Calibration level

InP.3

InH.1

OuH.1

End

InL.1: The input value of the lower scaling point is displayed.

The operator must adjust the lower input value by means of a process value simulator and confirm the input value by pressing key Ù.

OuL.1: The display value of the lower scaling point is displayed.

Before calibration, OuL.1 equals InL.1. The operator can correct the lower display value by pressing the ÈÌ keys. Subsequently, he confirms the display value by pressing key Ù.

InH.1: The input value of the upper scaling point is displayed. .

The operator must adjust the upper input value by means of the process value simulator and confirm the input value by pressing key Ù.

OuH.1: The display value of the upper scaling point is displayed.

Before calibration OuH.1 equals InH.1. The operator can correct the upper display value by pressing keys ÈÌ Subsequently, he confirms the display value by pressing key Ù.

È Ì

The parameters (OuL.1, OuH.1) changed at CAL level can be reset by adjusting the parameters below the lowest adjustment value (OFF) by means of decrement key Ì .

8800 process controller 67

Special functions

7 Special functions

7.1 DAC®– motor actuator monitoring

(Digital Actor Control DAC

)

With all controllers with position feedback Yp, the motor actuator can be monitored for functional troubles. The DAC

function can be started by chosing

the parameter C.Fnc = 5 or 6 at the configuration level ( ConF):

ConF / Cntr / C.Fnc = 5 3-point-stepping controller with

position feedback Yp as potentiometer

ConF / Cntr / C.Fnc = 6 Continuous controller with integrated

positioner and position feedback Yp as potentiometer

If an error occurs, the controller switches to manual operation (ò - LED blinks) and no impulses are given out any longer. If one of the relays switches when a

DAC

error occurs, parameter dAC.A = 1 and inverse action O.Act = 1 must

be selected for the relevant output OUT.1 … OUT.4 in the ConF menu ( OUt.3 and 4 only possible if O.tYP = 0 [relay/logic]):

ConF / OUt.x/dAc.A = 1 Motor actuator monitoring (DAC) aktive

The system detects the following stepping controller errors:

defective motor

defective capacitor (wrong rotating direction)

wrong phase followers (wrong rotating direction)

defective force transmission at spindle or drive

excessive backlash due to wear

jamming of the control valve e.g. due to foreign body

In these cases the controller will change to manual operation and the outputs will be switched off. Is the controller switched to automatic operation again or any modification is done the controller activates the DAC function again and the outputs will be setted.

Resetting of a DAC error:

After solving the technical problem the DAC errror can be acknowledged in the error list. Thereafter the controller works again in normal operation mode.

See also chapter 3.4 "Mainenance manager / Error list", page 12 ff.

DAC®– motor actuator monitoring 68 8800 process controller

Special functions

Functioning of the DAC function

No input filter should be defined for the Yp input ( PArA / InP.x/t.Fx=0). Therewith no wrong detection of blocking or wrong method of operation can be recognized. The automatic calibration can be used with drives outfitted with spring assembly.

Execution of the calibration:

It is controlled if the mean alteration between two messurements is enough for the DAC monitoring. The calibration will be stopped if the alteration between two messurements is too small. The position of 0% is searched. Therefor the drive will be closed until there is no changing of the input signal for 0,5 sec. Assuming that the drive is outfitted with spring assembly, the drive is opened for 2,8 sec. The drive should then still be within the spring assembly. This position is allocated and stored as 0%. With the same procedure the position for 100% is allocated and stored. Simultaneously the motor running time is determined and saved as parameter tt. Afterwards the controller sets the drive in the position before calibration. Was the controller in automatic mode before calibration it will be set to automatic mode again otherwise it remains in manual mode.

The following errors can be occure during calibration:

the change of the Yp input is to small, no monitoring is possible

the motion is in wrong direction

the Yp input is broken

In these cases the automatic calibration will be stopped and the controller remains in manual mode.

If the automatic calibration leads to no resonable results the calibration of the Yp input can be done manual.

If the conroller reaches the positions of 0% or 100% the outputs will be switched off. Also in manual mode it is not possible to exceed these limits.

Because no controller with continuouse output and Yp input is defined there won't be the DAC function for this controlling type.

8800 process controller 69 DAC®– motor actuator monitoring

Special functions

7.2 O2measurement

This function is available only on the instrument version with INP3. As the O

-measurement result range can extend over many decades, automatic

display switch-over between“%”and“ppm“ was realized.

The instantaneous unit is displayed in the lower line.

With set-point changing via keys I or D, the unit of the set-point and of the other parameters is displayed.

Lambda probes (λ probes) are used as sensors.

The electromotive force (in Volts) generated by λ probes is dependent of instantaneous oxygen content and temperature. Therefore, the 8800 process controller can only evaluate exact measurement results, if it knows the sensor temperature. Distinction of heated and non-heated lambda probes is made. Both can be evaluated by the 8800 process controller.

Heated lambda probes Controlled heating which ensures constant temperature is integrated in the heated

λ probe. This temperature must be entered in the 8800 process controller parameter Probe temperature.

Parameter r Controller r Probe temperature r .....°C (/°F - dependent of

configuration)

Non-heated lambda probes

With the probe always operated at a fixed, known temperature, a procedure as used for a heated probe can be used.

A non-heated λ probe is used, unless the temperature is constant. In this case, the probe temperature in addition to the probe mV value must be measured. For this purpose, any temperature measurement with one of the analog inputs INP2 or INP3 can be used. During function selection, the input must be set to X2 (second process value).

7.2.1 Connection

Connect the input for the lambda probe to INP1. Use terminals A15 and A17. If necessary, temperature measurement must be connected to INP2 or INP3.

Cntr r tEmP temp. 0...9999

O2measurement 70 8800 process controller

7.2.2 Configuration:

Oxygen measurement

Oxygen measurement with heated lambda probe Controller r Process value processing r 7: O temperature

Oxygen measurement with non-heated lambda probe Controller r Process value processing r O temperature

Input 1 r Function INP1 r 7: process value X1

InP.1 r 1.Fnc 7 X1-Input

functions with constant probe

Cntr r C.tYP 7 O2-const

functions with measured probe

Cntr r C.tYP 8 O2+temp

Special functions

In input 1, the sensor type is set for one of the high-impedance voltage inputs: Input 1 r Sensor type r 42: special (-25...1150 mV) or

41: special (-2,5...115 mV)

InP.1 r S.tyP 41 115 mV

InP.1 r S.tyP 42 1150 mV

Input 1 r meas. value correction r 0: no correction

InP.1 r S.Lin 0no

Temperature measurement (required with non-heated lambda probe)

Any temperature measurement with one of analog inputs INP2 or INP3 can be used. Select input X2 during function selection (second set-point).

With O2measurement, evaluation in ppm or % must be specified for all parameters related to the process value. This is done centrally during configuration.

Other r Parameter unit for O

othrr O2 0 unit : ppm othrr O2 1 unit : %

r 0: parameter for O2function in ppm

1: parameter for O

function in %

Whether the temperature of the non-heated λ probe is specified in °C or °F can be selected during configuration. Other r Unit r 1: in Celsius

2: in Fahrenheit

othrr Unit 1°C othrr Unit 2°F

8800 process controller 71 O2measurement

Special functions

7.3 Linearization

Linearization for inputs INP1 or INP3 Access to table “ Lin” is always with selection of sensor type S.TYP = 18:

special thermocouple in INP1 or INP3, or with selection of linearization S.Lin 1: special linearization.

Dependent of input type, the input signals are specified in µV or in Ohm dependent of input type.

With up to 16 segment points, non-linear signals can be simulated or linearized. Every segment point comprises an input (In.1 … In.16) and an output (Ou.1 … Ou.16). These segment points are interconnected automatically by means of straight lines. The straight line between the first two segments is extended downwards and the straight line between the two largest segments is extended upwards. I.e. a defined output value is also provided for each input value.

When switching an In.x value to OFF, all other ones are switched off. Condition for these configuration parameters is an ascending order.

In.1 < In.2 < ...< In.16 and Ou.1 < Ou.2 ...< Ou.16.

n.16

. . . . . .

In 1

Ou.1 Ou.16.....................

Linearization 72 8800 process controller

7.4 8800 process controller as Modbus master

Special functions

This function is only selectable with 8800/8840 configurator (engineering tool)!

Additions othr (only visible with 8800/8840 configurator!)

Name Value range Description Default

MASt

Cycl

AdrO

AdrU

Numb

0...200

1...65535

0...100

Controller is used as Modbus master

Slave Master Cycle time [ms] for the Modbus master to transmit its data

to the bus. Target address to which the with AdrU specified data is

given out on the bus. Modbus address of the data that Modbus master gives to

the bus. Number of data that should be transmitted by the Modbus

master.

The 8800 process controller can be used as Modbus master ( ConF / othr / MASt = 1 ). The Modbus master sends ist data to all slaves (Broadcast message, controller adress 0). It transmits its data (modbus adress AdrU) cyclic with the cycle time Cycl to the bus. The slave controller receives the data transmitted by the masters and allocates it to the modbus target adress AdrO. If more than one data should be transmitted by the master controller ( Numb > 1) , the modbus adress AdrU indicates the start adress of the data that should be transmitted and AdrO indicates the first target adress where the received data should be stored. The following data will be stored at the logically following modbus target adresses. With this it is possible e.g. to specify the process value of the master controller as set-point for the slave controllers.

8800 process controller 73 8800 process controller as Modbus master

8800/8840 configurator

8 8800/8840 configurator

8800/8840 configurator is the projection environment for thecontroller series of West. The following 3 versions with graded functionality are available:

Functionality Mini Basic Expert

parameter and configuration setting controller and control loop simulation download: writes an engineering to the controller online mode/ visualisation creation of user defined linearizations configuration of extended operating level upload: reads an engineering from the controller diagnosis function file, save engineering data printer function online documentation, help system measurement correction (calibration procedure) program editor data acquisition and trend function network and multiuser licence personal assistant function extended simulation

yes yes yes yes yes yes yes yes yes

SIM only yes yes

yes yes yes yes yes yes

SIM only yes yes

no no yes no yes yes

no yes yes yes yes yes yes yes yes

no no yes

SIM only yes yes

no no yes yes yes yes

no no yes

The mini version is - free of charge - at your disposal as download at West homepage www.westinstruments.com or on the West-CD (please ask for).

At the end of the installation the licence number has to be stated or DEMO mode must be chosen. At DEMO mode the licence number can be stated subsequently under Help r Licence r Change.

74 8800 process controller

9 Versions

Versions

8800 1 00

Flat-pin connectors 0 Screw terminals 1

90..250V AC, 4 relays 0 24VAC / 18..30VDC, 4 relays 1

90..250V AC, 3 relays + mA/logic 2 24VAC / 18..30VDC, 3 relays +mA/logic 3

90..250V AC, 2 relays + 2xmA/logic 4 24VAC / 18..30VDC, 2 relays + 2xmA/logic 5 no option 0 RS422/485 + U PROFIBUS-DP + U INP1 and INP2 0 INP1, INP2 and INP3 incl. O measuring

Standard configuration 0 Configuration to specification 9 no manual 0 manual german D manual english E manual french F Standard UL certified U DIN 3440 certified D

Unit/f ront accordingto customer specification XX

+di2,di3+OUT5,OUT6 1

+ di2/di3 + OUT5/OUT6 2

Accessories delivered with the unit

Operating manual (if selected by the ordering code)

2 fixing clamps

operating note in 12 languages

Accessory equipment with ordering information

Description Order no.

Heating current transformer 50A AC 9404-407-50001 PC-adaptor for the front-panel interface 9407-998-00001 Standard rail adaptor Insert order-no. Operating manual German 9499-040-70718 Operating manual English 9499-040-70711 Operating manual French 9499-040-70732 Interface description Modbus RTU German 9499-040-70818 Interface description Modbus RTU English 9499-040-70811 Interface description Profibus German 9499-040-70918 Interface description Profibus English 9499-040-70911 8800/8840 configurator (engineering tool) Mini Download www.westinstruments.com 8800/8840 configurator (engineering tool) Basic Insert order-no. 8800/8840 configurator (engineering tool) Expert Insert order-no.

8800 process controller 75

Technical data

10 Technical data

INPUTS

PROCESS VALUE INPUT INP1

Resolution: > 14 bits Decimal point: 0 to 3 digits behind the

decimal point Dig. input filter: adjustable 0,000...9999 s Scanning cycle: 100 ms Measured value

correction:

2-point or offset correction

Linearization: 16 segments, adaptable

with 8800/8840

Configurator Decimal point: adjustable Input circuit monitor: 12,5% below span start

(2mA, 1V)

SUPPLEMENTARY INPUT INP2

Resolution: > 14 bits Scanning cycle: 100 ms

Heating current measurement

Thermocouples

r Table 1 (page 80 )

Input resistance: Effect of source resistance:

Cold-junction compensation

Maximal additional error:

Sensor break monitoring

Sensor current: Configurable output action

Resistance thermometer

≥

Ω

1 µV/Ω

± 0,5 K

≤1µ

r Table 2 (page 80 )

Connection: 3-wire Lead resistance: max. 30 Ohm Input circuit monitor: break and short circuit

Special measuring range

8800/8840 Configurator (engineering tool) can be used to match the input to sensor KTY 11-6 (characteristic is stored in the controller).

Physical measuring range: 0...4500 Ohm Linearization segments 16

via current transformer (→ Accessory equipment)

Measuring range: 0...50mA AC Scaling: adjustable -1999...0,000...9999 A

Current measuring range

Technical data as for INP1

Potentiometer

r Table 2 (page 80 )

SUPPLEMENTARY INPUT INP3 (OPTION)

Resolution: > 14 bits Scanning cycle: 100 ms

Technical data as for INP1 except 10V range.

CONTROL INPUTS DI1, DI2

Configurable as switch or push-button! Connection of a potential-free contact suitable for switching “dry” circuits.

Switched voltage: 5 V Current: 100µA

Current and voltage signals

r Table 3 (page 80 )

Span start, end of span: anywhere within measuring

range

Scaling: selectable -1999...9999

76 8800 process controller

Technical data

CONTROL INPUTS DI2, DI3 (OPTION)

The digital input di2 located on the A-card and di2 located on the option card are or-linked. Configurable as switch or push-button! Optocoupler input for active triggering.

Nominal voltage 24 V DC external Current sink (IEC 1131 type 1) Logic “0” -3...5 V Logic “1” 15...30 V Current requirement approx.. 5 mA

TRANSMITTER SUPPLY UT (OPTION)

Power: 22 mA /≥18 V

If the universal output OUT3 or OUT4 is used there may be no external galvanic connection between measuring and output circuits!

GALVANIC ISOLATION

Operating life (electr.):

Note:

If the relays operate external contactors, these must be fitted with RC snubber circuits to manufacturer specifications to prevent excessive switch-off voltage peaks.

600.000 duty cycles with max. contact rating

OUT3, 4 AS UNIVERSAL OUTPUT

Galvanically isolated from the inputs.

Freely scalable resolution: 11 bits

Current output

0/4...20 mA configurable. Signal range: 0...approx.22mA Max. load: Load effect: no effect Resolution: Accuracy

500

≤

≤22µ ≤40µ

Ω

A (0,1%) A (0,2%)

Safety isolation Function isolation

Process value input INP1

Mains supply Supplementary input INP2

Optional input INP3

Digital input di1, di2 Relay OUT1 RS422/485 interface Relay OUT2 Digital inputs di2, 3 Relay OUT3 Universal output OUT3 Relay OUT4 Universal output OUT4

Transmitter supply U

OUT5, OUT6

OUTPUTS

RELAY OUTPUTS OUT1...OUT4

Contact type: potential-free changeover

contact

Max.contact rating: 500 VA, 250 V, 2A at 48...62 Hz,

resistive load

Min. contact rating: 5V, 10 mA AC/DC

Voltage output

0/2...10V configurable Signal range: 0...11 V Min. load:

≥ 2k

Ω

Load effect: no effect Resolution: Accuracy

11 mV (0,1%)

≤

20 mV (0,2%)

≤

OUT3, 4 used as transmitter supply

Output power: 22 mA /≥13 V

OUT3, 4 used as logic output

Load≤500 Load > 500

Ω Ω

0/≤20 mA 0/> 13 V

OUTPUTS OUT5/6 (OPTION)

Galvanically isolated opto-coupler outputs. Grounded load: common positive voltage. Output rating: 18...32 VDC; ≤ 70 mA Internal voltage drop: ≤ 1 V with I Protective circuit: built-in against short circuit, overload, reversed polarity (free-wheel diode for relay loads).

max

8800 process controller 77

Technical data

POWER SUPPLY

Dependent of order:

AC SUPPLY

Voltage: 90...260 V AC Frequency: 48...62 Hz Power consumption approx. 7,0 VA

UNIVERSAL SUPPLY 24 V UC

AC voltage: 20,4...26,4 V AC Frequency: 48...62 Hz DC voltage: 18...31 V DC Power consumption: approx.. 7,0 VA

BEHAVIOUR WITH POWER FAILURE

Configuration, parameters and adjusted set-points, control mode:

Non-volatile storage in EEPROM

FRONT INTERFACE

Connection of PC via PC adapter (see "Accessory equipment"). The 8800/8840 Configurator software is used to configure, set parameters and operate the 8840 profiler.

Permissible temperatures

For specified

0...60°C

accuracy: Warm-up time:

≥ 15 minutes For operation: -20...65°C For storage: -40...70°C

Humidity

75% yearly average, no condensation

Shock and vibration

Vibration test Fc (DIN 68-2-6)

Frequency: 10...150 Hz Unit in operation: 1g or 0,075 mm Unit not in operation: 2g or 0,15 mm

Shock test Ea (DIN IEC 68-2-27)

Shock: 15g Duration: 11ms

Electromagnetic compatibility

Complies with EN 61 326-1 (for continuous, non-attended operation)

BUS INTERFACE (OPTION)

Galvanically isolated Physical: RS 422/485 Protocol: Modbus RTU Transmission speed: 2400, 4800, 9600, 19.200

bits/sec Address range: 1...247 Number of controllers per bus: 32

Repeaters must be used to connect a higher number of controllers.

ENVIRONMENTAL CONDITIONS

Protection modes

Front panel: IP 65 (NEMA 4X) Housing: IP 20 Terminals: IP 00

GENERAL

Housing

Material: Makrolon 9415

flame-retardant

Flammability class: UL 94 VO, self-extinguishing

Plug-in module, inserted from the front

Safety test

Complies with EN 61010-1 (VDE 0411-1): Overvoltage category II Contamination class 2 Working voltage range 300 V Protection class II

78 8800 process controller

Certifications

UL-approval

Electrical connections

flat-pin terminals 1 x 6,3mm or 2 x 2,8mm to

DIN 46 244 or screw terminals for 0,5 to 2,5mm²

Mounting

Panel mounting with two fixing clamps at top/bottom or right/left, High-density mounting possible

Mounting position: uncritical Weight: 0,27kg

Technical data

Accessories delivered with the unit

Operating manual Fixing clamps

8800 process controller 79

Technical data

Table 1 Thermocouples measuring ranges

Thermoelementtype Measuring range Accuracy L Fe-CuNi (DIN) -100...900°C -148...1652°F J Fe-CuNi -100...1200°C -148...2192°F K NiCr-Ni -100...1350°C -148...2462°F N Nicrosil/Nisil -100...1300°C -148...2372°F S PtRh-Pt 10% 0...1760°C 32...3200°F R PtRh-Pt 13% 0...1760°C 32...3200°F T Cu-CuNi -200...400°C -328...752°F C W5%Re-W26%Re 0...2315°C 32...4199°F D W3%Re-W25%Re 0...2315°C 32...4199°F E NiCr-CuNi -100...1000°C -148...1832°F B * PtRh-Pt6% 0(100)...1820°C 32(212)...3308°F

* Specifications valid for 400°C

ß 2K ß 2K ß 2K ß 2K ß 2K ß 2K ß 2K ß 2K ß 2K ß 2K ß 2K

Table 2 Resistance transducer measuring ranges

Type Signal Current Measuring range Accuracy

Resolution (Ô) 0,1 K 0,1 K 0,2 K 0,2 K 0,2 K 0,2 K 0,05 K 0,4 K 0,4 K 0,1 K 0,3 K

Resolution (Ô)

Pt100 Pt100 -200...850°C -140...1562°F Pt1000 -200...850°C -140...392°F KTY 11-6 * -50...150°C -58...302°F Spezial 0...4500 Spezial 0...450 Poti 0...160 Poti 0...450 Poti 0...1600 Poti 0...4500 * Or special

0,2mA

-200...100°C -140...212°F

ß 1K ß 1K ß 2K ß 2K

ß 0,02 %

Table 3 Current and voltage measuring ranges

Measuring range Input impedance Accuracy 0-10 Volt

-2,5-115 mV

~ 110 kΩ

? 1MΩ ß 0,1 %

ß 0,1 % 0,6 mV

0,1K 0,1K 0,1K 0,05K

0,01 %

Resolution (Ô)

6 µV

-25-1150 mV

0-20 mA

? 1MΩ ß 0,1 %

20 Ω

ß 0,1 %

80 8800 process controller

60 µV 1,5 µA

Safety hints

11 Safety hints

This unit was built and tested in compliance with VDE 0411-1 / EN 61010-1 and was delivered in safe condition. The unit complies with European guideline 89/336/EWG (EMC) and is provided with CE marking. The unit was tested before delivery and has passed the tests required by the test schedule. To maintain this condition and to ensure safe operation, the user must follow the hints and warnings given in this operating manual. The unit is intended exclusively for use as a measurement and control instrument in technical installations.

Warning

If the unit is damaged to an extent that safe operation seems impossible, the unit must not be taken into operation.

ELECTRICAL CONNECTIONS

The electrical wiring must conform to local standards (e.g. VDE 0100). The input measurement and control leads must be kept separate from signal and power supply leads. In the installation of the controller a switch or a circuit-breaker must be used and signified. The switch or circuit-breaker must be installed near by the controller and the user must have easy access to the controller.

COMMISSIONING

Before instrument switch-on, check that the following information is taken into account:

Ensure that the supply voltage corresponds to the specifications on the type

label. All covers required for contact protection must be fitted.

If the controller is connected with other units in the same signal loop, check

that the equipment in the output circuit is not affected before switch-on. If necessary, suitable protective measures must be taken. The unit may be operated only in installed condition.

Before and during operation, the temperature restrictions specified for

controller operation must be met.

SHUT-DOWN

For taking the unit out of operation, disconnect it from all voltage sources and protect it against accidental operation. If the controller is connected with other equipment in the same signal loop, check that other equipment in the output circuit is not affected before switch-off. If necessary, suitable protective measures must be taken.

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Safety hints

MAINTENANCE, REPAIR AND MODIFICATION

The units do not need particular maintenance.

Warning

When opening the units, or when removing covers or components, live parts and terminals may be exposed.

Before starting this work, the unit must be disconnected completely.

After completing this work, re-shut the unit and re-fit all covers and components. Check if specifications on the type label must be changed and correct them, if necessary.

Caution

When opening the units, components which are sensitive to electrostatic discharge (ESD) can be exposed. The following work may be done only at workstations with suitable ESD protection. Modification, maintenance and repair work may be done only by trained and authorized personnel. For this purpose, the West service should be contacted.

The cleaning of the front of the controller should be done with a dry or a wetted (spirit, water) kerchief.

11.1 Resetting to factory setting

In case of faulty configuration, 8800 process controller can be reset to the default condition. For this, keep the following two keys pressed during power-on :

Controller reset to default is signalled by displaying FACTory shortly in the display. Subsequently, the controller returns to normal operation.

FAC

torY

ÈÌ

Resetting to factory setting 82 8800 process controller

12 Notes

Notes

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Notes

84 8800 process controller

Notes

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Index

0-9

2-point correction............67

Alarm handling ..........28-29

Digital inputs di1, di2, di3

Configuration ..........44

Technical data ..........78

Environmental conditions .......81

Equipment ...............77

Error list ................15

Bargraph ................12

Bus interface

Technical Data..........81

Calibration level (CAL)......67-69

Certifications ..............82

Configuration examples

2-point controller ........55

3-point controller ........56

3-point stepping controller . . . 57

Continuous controller ......58

D - Y -Off controller.......59

Measured value output .....60

Signaller .............54

Configuration level

Configuration parameters. . 32 - 49

Parameter survey ........31

Connecting diagram ...........7

Connecting examples

di2/3, 2-wire transmitter supply . 9

INP2 current transformer .....8

OUT1/2 heating/cooling .....8

OUT3 as logic output ......11

OUT3 transmitter supply ....10

RS485 interface .........10

Control inputs di1, di2, di3

Technical data ..........78

Cooling functions

Constant period .........53

Standard .............51

Water cooling non-linear ....52

Current signal measuring range ....78

Front view ...............12

Input INP1

Configuration ..........33

Parameters ............64

Technical data ..........78

Input INP2

Configuration ..........35

Parameters ............64

Technical data ..........78

Input INP3

Configuration ..........35

Parameters ............65

Technical data ..........78

Input scaling ..............66

LED

Ada-LED............12

Err-LED............12

func-LED............12

ì -LED.............12

LED colours ...........12

ò -LED.............12

para-LED............12

SP.2-LED............12

SP.E-LED ...........12

Linearisierung .............74

Mainenance manager .......15-17

Manual tuning .............26

Modbus master .............75

Mounting.................6

DAC................70-71

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Notes................86-87

O2-Messung ..............72

Offset correction ............67

Optimierung am Sollwert .......20

Output OUT1

Configuration ..........39

Technical data ..........79

Output OUT2

Configuration ..........40

Technical data ..........79

Output OUT3

Configuration ..........41

Technical data ..........79

Output OUT4

Configuration ..........42

Technical data ..........79

Output OUT5

Configuration ..........44

Technical data ..........80

Output OUT6

Configuration ..........44

Technical data ..........80

Versions ................77

Voltage signal measuring range ....78

Parameter setting level

Parameter survey ........62

Parameters .........63-65

Parameter Sollwertgradient ......64

Resetting to factory setting .......85

Resistance thermometer measuring range

.....................78

Safety hints ............84-85

Safety switch...............6

Safety test................81

Sauerstoffmessung ...........72

Self-tuning

Cancelation ...........23

Cancelation causes........24

Set-point processing ..........50

Thermocouple measuring range ....78

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Subject to alterations without notice

West Instruments The Hyde Business Park Brighton BN2 4JU UK

Printed in Germany 9499-040-70611 (08/2003)

West Control Solutions N8800 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual