Chromalox 8004-2 Bedienungsanleitung

8004-2

Temperature Controller with Servomotor Output

Issue date rUSER'S MANUAL

May 2000

Chromalox

8004-Tser0-DA.p65 5/29/00, 6:50 PM1

INDEX

MOUNTING REQUIREMENTS .......................... 1

OUTLINE AND CUT OUT DIMENSIONS ........... 2

CONNECTION DIAGRAMS ................................ 3

PRELIMINARY HARDWARE SETTINGS ........... 9

CONFIGURATION PROCEDURE .................... 10

OPERATIVE MODE .......................................... 18

Display function ......................................... 18

Indicators ................................................... 19

Pushbutton function during operating mode

Feedback potentiometer calibration .......... 20

Enable/disable the control output .............. 20

Manual function ......................................... 21

Direct access to the set point .................... 21

operative set point selection ...................... 22

Serial link ................................................... 22

SMART function ........................................ 22

Lamp test ................................................... 23

OPERATIVE PARAMETERS ............................ 23

ERROR MESSAGES ........................................ 26

GENERAL INFORMATIONS ............................ 29

MAINTENANCE ................................................ 33

DEFAULT PARAMETERS ............................... A.1

8004-Tser0-DA.p65 5/29/00, 6:50 PM2

III

Model identification

Model

8004 1/16 DIN Temperature Controller

Code Outputs

21 1 servomotor + 1 relay + 3 logic inputs

Code Output 2 - Alarm

0 None

1 Out #4

2 Out #4 + RS-485

Code Instrument Power

3 100 - 240 Vac

5 24 V AC/DC

Code

000 Add to complete model number

8004 21 1 3 000 Typical Model Number

8004-Tser0-DA.p65 5/29/00, 6:50 PM3

MOUNTING REQUIREMENTS

Select a mounting location where there is

minimum vibration and the ambient temperature

range between 0 and 50 °C.

The instrument can be mounted on a panel up to

15 mm thick with a square cutout of 45 x 92 mm.

For outline and cutout dimensions refer to Fig. 2.

The surface texture of the panel must be better

than 6,3 mm.

The instrument is shipped with rubber panel

gasket (50 to 60 Sh).

To assure the IP65 and NEMA 4 protection, insert

the panel gasket between the instrument and the

panel as shown in fig. 1.

While holding the instrument against the panel

proceed as follows:

1) insert the gasket in the instrument case;

2) insert the instrument in the panel cutout;

3) pushing the instrument against the panel,

insert the mounting bracket;

4) with a screwdriver, turn the screws with a

torque between 0.3 and 0.4 Nm.

Screw

Fig. 1

bracket Panel

Gasket

8004-Tser1-DA.p65 5/29/00, 6:51 PM1

OUTLINE AND CUT OUT

DIMENSIONS

Fig. 2

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CONNECTION DIAGRAMS

Connections are to be made with the instrument

housing installed in its proper location.

Fig. 3 REAR TERMINAL BLOCK

A) MEASURING INPUT

NOTE: Any external components (like zener

barriers etc.) connected between sensor and

input terminals may cause errors in measurement

due to excessive and/or not balanced line

resistance or possible leakage currents.

TC INPUT

Fig. 4 THERMOCOUPLE INPUT WIRING

NOTE:

1) Don’t run input wires together with power

cables.

2) For TC wiring use proper compensating cable

preferable shielded.

3) when a shielded cable is used, it should be

connected at one point only.

Shield

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RTD INPUT

Fig. 5 RTD INPUT WIRING

NOTE:

1) Don’t run input wires together with power

cables.

2) Pay attention to the line resistance; a high line

resistance may cause measurement errors.

3) When shielded cable is used, it should be

grounded at one side only to avoid ground loop

currents.

4) The resistance of the 3 wires must be the

same.

LINEAR INPUT

Fig. 6 mA, mV AND V INPUTS WIRING

NOTE:

1) Don’t run input wires together with power

cables.

2) Pay attention to the line resistance; a high line

resistance may cause measurement errors.

3) When shielded cable is used, it should be

grounded at one side only to avoid ground loop

currents.

4) The input impedance is equal to:

< 5 Wfor 20 mA input

> 1 MWfor 60 mV input

> 200 kWfor 5 V input

> 400 kWfor 10 V input

RTD

3 4

RTD

Shield

+mA,

8004-Tser1-DA.p65 5/29/00, 6:51 PM4

B) LOGIC INPUT

Safety note:

1) Do not run logic input wiring together with

power cables.

2) Use an external dry contact capable of

switching 0.5 mA, 5 V DC.

3) The instrument needs 100 ms to recognize a

contact status variation.

4) The logic inputs are NOT isolated by the

measuring input

Fig. 7 - LOGIC INPUT WIRING

This instrument is provided with 3 logic inputs.

The binary combination of the logic input 1 and 3

allows to select the operative set point according

with the following table:

logic input 3 logic input 1 op. set point

open open SP

open close SP2

close open SP3

close close SP4

The logic input 2 function is programmed by P 24

parameter.

Log. input 3

Log. input 2

Log. input 1

Servo-

motor

Power

line

s(Open the valve)

t(Close the valve)

Feedback

potentiometer

Shield

C) VALVE MOTOR DRIVE OUTPUT.

Fig. 8 - SERVOMOTOR WIRING

The two relay outputs are interlocked.

NOTE:

1) Before connecting the instrument to the power

line, make sure that line voltage and the load

current are in accordance with the contact rating

(3A/250V AC on resistive load).

2) To avoid electric shock, connect power line at

the end of the wiring procedure.

3) For servomotor connections use No 16 AWG or

larger wires rated for at last 75 °C.

4) Use copper conductors only.

5) Don’t run input wires together with power cables.

6) For feedback potentiometer, use shielded cable

with the shield connected to the earth at one point

only.

7) The relay outputs are protected by varistor

against inductive load with inductive

component up to 0.5 A.

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D) RELAY OUTPUTS

Fig. 9 RELAY OUTPUTS WIRING

NOTE: OUT 1 can be used either as servomotor

output or as time proportional relay output;

by the P5 parameter (see pag.11) it is

possible to set the desired output.

All relay outputs are protected by varistor against

inductive load with inductive component up to 0.5 A.

The contact rating of OUT 1 is 3A/250V AC on

resistive load, the contact rating of OUT 3 and 4

is 2A/250V AC on resistive load.

The contact rating of the OUT 3 and 4 is 2A/250V AC

resistive load.

The number of operations is 1 x 105at specified

rating.

Alarm 2 and alarm 3 are in OR condition on the

out 4.

The following recommendations avoid serious

problems which may occur, when using relay

output for driving inductive loads.

INDUCTIVE LOADS

High voltage transients may occur when switching

inductive loads.

Through the internal contacts these transients

may introduce disturbances which can affect the

performance of the instrument.

The internal protection (varistor) assures a correct

protection up to 0.5 A of inductive component.

The same problem may occur when a switch is

used in series with the internal contacts as shown

in Fig. 10.

Fig. 10 EXTERNAL SWITCH IN SERIES WITH

THE INTERNAL CONTACT

In this case it is recommended to install an

additional RC network across the external contact

as shown in Fig. 10

The value of capacitor (C) and resistor (R) are

shown in the following table.

Anyway the cable involved in relay output wiring

must be as far away as possible from input or

communication cables.

15 C - OUT 3/4

NO - OUT 3

NO - OUT 4

OUT 3

OUT 4

LOAD

(mA)

<40 mA

<150 mA

<0.5 A

(mF)

0.047

0.1

0.33

(W)

100

(W)

1/2

OPERATING

VOLTAGE

260 V AC

18 C

OUT 1

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SERIAL INTERFACE

RS-485 interface allows to connect up to 30

devices with one remote master unit.

Fig. 11 - RS-485 WIRING

The cable length must not exceed 1.5 km at 9600

BAUD.

NOTE: The following report describes the signal

sense of the voltage appearing across the

interconnection cable as defined by EIA for

RS-485.

a) The ” A ” terminal of the generator shall

be negative with respect to the ” B ” terminal

for a binary 1 (MARK or OFF) state.

b) The ” A ” terminal of the generator shall

be positive with respect to the ” B ” terminal

for a binary 0 (SPACE or ON)

9COMMON

B'/B

B/B'

A/A' A'/A

R (S,T)

POWER LINE 100 V to 240 V A.C

(50/60Hz)

or 24 V AC/DC

E) POWER LINE WIRING

Fig. 12 POWER LINE WIRING

NOTE:

1) Before connecting the instrument to the power

line, make sure that line voltage corresponds to

the descrtiption on the identification label.

2) To avoid electric shock, connect power line at

the end of the wiring procedure.

3) For supply connections use No 16 AWG or larger

wires rated for at last 75 °C.

4) Use copper conductors only.

5) Don't run input wires together with power cables.

6) For 24 V DC the polarity is a do not care condition.

7) The power supply input is fuse protected by a sub

miniature fuse rated T, 1A, 250 V.

When fuse is damaged, it is advisable to verify

the power supply circuit, so that it is necessary to

send back the instrument to your supplier.

8) The safety requirements for Permanently Con-

nected Equipment say:

- a switch or circuit-breaker shall be included in

the building installation;

- It shall be in close proximity to the equipment

and within easy reach of the operator;

- it shall be marked as the disconnecting device

for the equipment.

8004-Tser1-DA.p65 5/29/00, 6:51 PM7

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