VDH MC 785 KLIMA User Manual

Description : MC 785 KLIMA 0-100C Thermo/Hygrostat Doc.nr.: 080631 Type: MANUAL Number of pages: 16 Version: V1.0 File: Do080631 MC785 KLIMA 0_100 v10

EN.wpd

Software: MC785KLIMA100 Version: V1.00

By: HN Date: 14-03-2008

VDH Products BV - Roden - Holland Signed: File: Doc'08

MC 785 KLIMA

0-100C

User manual

(Wall and Panel mount)

User manual Document Nr. : 080631 Version : V1.0

MC 785 KLIMA 0-100C Client : General Page : 2 of 16

The information contained in this document is assumed to be accurate. However, VDH Products BV does not accept any liability for eventual mistakes or errors, and retains the right to adapt or change this document without notice.

Table of contents

1. Technical specifications ..................................................... 3

2. Functional specifications .................................................... 5

3. Control ................................................................. 6

4. Programming internal settings ................................................ 7

5. Operation relay outputs .................................................... 10

6. Sensor calibration ........................................................ 11

7. Alarms ................................................................. 11

8. Front .................................................................. 12

9. Connection diagrams ...................................................... 13

10. Dimensions ............................................................. 15

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1. Technical specifications

General Type : MC 785 KLIMA Wall mount version: Housing : Grey plastic Material : Polystyrol 454h KG 2 natur BASF Dimensions : 213 x 180 x 85mm (whd) Front : Polycarbonate (IP-44) Panel mount version: Housing : Steel case for panel mount Material : Steel silver grey painted Dimensions : 217 x 155 x 85mm (whd) Panel cut : min. 208 x 146mm (wh) Front : Polycarbonate (IP-44) Temperature range : 0/+100C per 0,1C Rel. humidity range : 0/+100% RH per 0,1% RH Power supply : 230 Vac; 50/60 Hz (-10/+5%). Power consumption : 9 VA Operating temperature : -20/+50C Operating rel. humidity : 10/+90 % RH not condensing Accuracy : ± 0,5 % of the range

Front Display : 4-digit digital display for measured temperature

4-digit digital display for temperature set point 4-digit digital display for measured RH 4-digit digital display for RH set point

LED's : COOL = LED Relay cooling active

HEAT = LED Relay heating active DEHUM = LED Relay dehumidifying active HUM = LED Relay humidifying active

= LED Alarm active (flashing) = LED Day mode active

= LED Night mode active

Keys : ON/OFF = On/Off key controller

SET = Set point push button  = Up key  = Down key PRG = Program key RESET ALARM = Alarm reset key

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In- and Outputs Sensors : Temperature sensor (Pt-100, 3-wire to DIN/IEC 751)

RH sensor (0/+1 Vdc = 0/+100% RH)

Digital inputs : Day/night input (potential free input contact)

External alarm input (potential free input contact)

Spare input (potential free input contact) Analog outputs : 2x 0/+10Vdc, Rbmin 10Kohm, programmable. Relay outputs : RY1 Extra relay (C/NO/NC, 250Vac/10A not inductive)

Options extra relay (adjustable with parameter 20);

P20=0 Fail safe alarm (normal C-NO is closed and

during alarm C-NC is closed)

P20=1 Control alarm (normal C-NC is closed and

during alarm C-NO is closed) P20=2 Function Cooling P20=3 Function Heating P20=4 Function Dehumidifying P20=5 Function Humidifying The following relays have a central common; RY2 Dehumidifying(NO, 250Vac/10A not inductive) RY3 Humidifying (NO, 250Vac/10A not inductive) RY4 Heating (NO, 250Vac/10A not inductive) RY5 Cooling (NO/NC, 250Vac/10A not inductive)

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2. Functional specifications

The MC 785 KLIMA has the following control functions: cooling, heating, dehumidifying and humidifying. Further more the controller has an alarm relay, which is activated when the alarm levels are exceeded or a sensor is broken.

The MC 785 KLIMA has two analog outputs with a range of 0/+10Vdc, these are controlled by three controllers. With Out-1 is controlled by Control-1 and Out-2 is controlled by the highest value of Control-2 and Control-3. The functions of these controllers are programmable as measuring signal, set point signal or a P(I) control for the cooling, heating, humidifying or dehumidifying.

The controller has two digital input contacts. The first contact is used as day/night input and the second contact is used as external alarm.

The selection of the above mentioned settings is done via the Internal Parameters.

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3. Control

During normal operation the upper displays show the measured temperature and measured rel. humidity and the lower displays show the temperature set point and the RH set point.

Changing the temperature set point. Push the SET key next to the temperature set point display. The set point starts flashi ng. The set

point can be changed with the UP and DOWN key. By pushing the SET key once again, the set point shows continuously in the display.

Is the MC 785 KLIMA in the day mode (DAY LED on) and should the ni ght set point be watched or changed, push the UP or DOWN key and next on the SET key. The LED of the other mode flashes, the set point appears flashing in the display. Changing of the set point again with the UP or DOWN keys and acknowledged with the SET key.

In the same way the day set point can be watched or changed if the MC 785 KLIMA is in the night mode.

Changing of the RH set point. Push the SET key next to the RH set point display. The set point starts flashing and can be changed

with the UP or DOWN keys. By pressing the SET key again the set point appears continuously in the display.

If the instrument is in the day mode (DAG LED on) and the night set point needs to watched or changed, push the UP or DOWN key and next push the SET key. The LED of the other mode flashes, the set point appears flashing in the display. Changing of this set point again with the UP or DOWN keys and acknowledged with the SET key.

In the same way the day set point can be watched or changed if the MC 785 KLIMA is in the night mode.

Resetting the alarm. As soon as an alarm situation occurs and a failure message appears in the temperature display can,

by pushing the RESET ALARM key, the alarm be reset. The error message remains in the display, till the cause of the failure is solved.

Day/night input. If the day/night i nput i s closed, the MC 785 KLIMA switches from day to night mode. The night LED

light. If the input is opened, the controller switches back to the day mode. External alarm input. If the external alarm input is closed, an alarm message appears in the display. The alarm relais is

activated. By pressing the ALARM RESET key, the alarm relay can be reset. The error message remains in the display, until the external alarm input is opened again.

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4. Programming internal settings

By pressing the PRG and RESET ALARM key at the same time for more than 5 seconds, the Internal Parameter menu is entered. In the display appears a P with a number behind it. With the UP or DOWN key the required parameter is selected.

If the required parameter is reached, can by pushing the PRG key, the value of the parameter be watched. By simultaneously pressing the PRG with the UP or DOWN key, the value can be adjusted. After releasing the keys, the parameter number appears again in the display.

If during 30 seconds no key is touched, the display turn back to the normal operation mode. Parameter table.

Number Description Range Unit Default

P 01 P 02 P 03 P 04 P 05 P 06 P 07 P 08

Differential cooling Offset cooling Differential heating Offset heating Diff. dehumidifying Offset dehumidifying Diff. humidifying Offset humidifying

0.1..15

-15..+15

0.1..15

-15..+15

0.1..15

-15..+15

0.1..15

-15..+15

°C °C °C °C % RH % RH % RH % RH

0.5

0.0

0.5

0.0

1.0

0.0

1.0

0.0

P 10 P 11

Offset temp. sensor Offset RH sensor

-10/+10

-15/+15

°C % RH

0.0

P 20

P 21 P 22

Function extra relay 0 = fail safe alarm 1 = control alarm 2 = cooling 3 = heating 4 = dehumidifying 5 = humidifying 6 = fail safe alarm not resettable 7 = control alarm not resettable 8 = extra relay; On when controller is on and off when controller is off Diff. extra relay Offset extra relay

0..8

0.1..15

-15..+15

0.5

0.0

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Number Description Range Unit Default

P 30 P 31 P 32 P 33 P 34 P 35 P 36

Minimum setting temperature set point Maximum setting temperature set point Read-out above -10°C per 1°C Read-out below -10°C per 1°C Minimum setting RH set point Maximum setting RH set point Read out per 1% RH

0..+100

0..+100 0 = No

1 = Yes 0 = No 1 = Yes

0..100

0..100 0 = No

1 = Yes

°C °C

- % RH % RH

0.0

+100.0

0 1 0 100 0

P 40

P 41 P 42 P 43 P 44 P 45

P 46

Type temperature alarm 0 = No alarm 1 = Absolute alarm 2 = Relative to setp. Minimum alarm temp. Maximum alarm temp. Minimum alarm delay Maximum alarm delay Temperature control off at minimum alarm Temperature control off at maximum alarm

0..2

0..+100

0..99

0..99 0 = No 1 = Yes 0 = No 1 = Yes

°C °C Minutes Minutes

0.0

+100.0

0 0 0

P 50

P 51 P 52 P 53 P 54 P 55

P 56

Type RH alarm 0 = No alarm 1 = Absolute 2 = Relative to setp. Minimum RH alarm Maximum RH alarm Minimum alarm delay Maximum alarm delay RH control off at minimum alarm RH control off at maximum alarm

0..2

-100..100

0..100

0..99

0..99 0 = No 1 = Yes 0 = No 1 = Yes

% RH % RH Minutes Minutes

0.0

100.0 0 0 0

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Number Description Range Unit Default

P 60

P 61 P 62 P 63 P 64 P 65

Function control-1=out1 0 = Measured temp. 1 = Measured RH 2 = Temperature setp. 3 = RH set point 4 = P(I) cooling 5 = P(I) heating 6 = P(I) dehumidifying 7 = P(I) humidifying 0 V output at 10 V output at Proportional range Offset prop. range Interval value (999 give only P)

0..7

-100..+100

0.1..15

-15..+15

1..999

- Minutes

-0.0

+100.0

1.0

0.0 999

P 70

P 71 P 72 P 73 P 74 P 75

Function control-2>out2 0 = Measured temp. 1 = Measured RH 2 = Temperature setp. 3 = RH set point 4 = P(I) cooling 5 = P(I) heating 6 = P(I) dehumidifying 7 = P(I) humidifying 0 V output at 10 V output at Proportional range Offset prop. range Interval value (999 gives only P)

0..7

-100..+100

0.1..15

-15..+15

1..999

- Minutes

0.0

+100.0

1.0

0.0 999

P 80

P 83 P 84 P 85

Function control-3>out2 0 = 0Vdc (not active) 1 = P(I) cooling 2 = P(I) heating 3 = P(I) dehumidifying 4 = P(I) humidifying Proportional range Offset prop. range Interval value (999 gives only P)

0..4

0.1..15

-15..+15

1..999

- Minutes

1.0

0.0 999

P 90 P 91 P 95 P 96

Analog out-1 as Pulse/Pause control Pulse/Pause cycle-time1

Analog out-2 as Pulse/Pause control Pulse/Pause cycle time2

0 = No 1 = Yes

5..240 0 = No

1 = Yes

5..240

- Sec.

0 20 0 20

P 100 Complete control off

at external alarm

0 = No 1 = Yes

- 0

P 105 P 106 P 107

Software version nr. Serial number Production date

Year/w

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5. Operation relay outputs

Operation of the cooling and heating. The cooling (RY5) switches if the temperature is higher than set point + offset cooling +

differential cooling and switches off if the temperature is lower than set point + offset cooling. The heating (RY4) switches if the temperature is lower than set point + offset heating - differential

heating and switches off id the temperature is higher than set point + offset heating.

Operation of the humidifying and dehumidifying functions The dehumidifying Relay (RY2) switches on if the RH is higher than set point + offset dehumidify +

differential dehumidify and switches off if the RH is lower than set point + offset dehumidify. The humidifying Relay (RY3) switches on if the RH is lower than the set point + offset humidify -

differential humidify and swi tches off if the RH is lower than set point + offset humidify.

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6. Sensor calibration

With parameters P10 and P11 can the temperature and RH sensor be calibrated. Indicates the temperature sensor e.g. 0,2C too much, the offset (P 10) should be set at -0,2C.

7. Alarms

If the extra relay is set as watch alarm (parameter P20=0), in normal mode the relay is on and drops during alarm. In this mode also an alarm is given if the power supply is lost. If the extra relay is programmed as control alarm (P20=1), in normal mode the relay is off and is switches on during alarm. During alarm the alarm LED on the front flashes. Depending on the setting of the Internal Parameters the control will stop or continue.

An alarm can be caused by: Temperature alarm : tLO = Minimum temperature alarm

tHI = Maximum temperature alarm

RH alarm : rLO = Minimum RH alarm

rHI = Maximum RH alarm External alarm : F1 = External alarm Sensor failure : E1 = Temperature sensor broken

E2 = RH sensor broken The temperature alarm messages tLO, tHI, E1 and ext er nal alarm m essage F1 are displayed in the

temperature display (left top). The RH alarm messages rLO, rHI and E2 are shown in the RH-display (right top).

By pressing the RESET ALARM key the extra relay wil l, if configured as alarm relay, be reset. The error message remains during the failure in the display. Also the alarm LED will continue to flash.