DEL-AIR SR-242 Bedienungsanleitung

User’s Guide

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SR-242 USER’S GUIDE

41D01C7 (F7) Page 2 of 2 02/04/30

Table of Contents

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

2. Faceplate ..........................................................................................................................3

2.1 Parameter List ..............................................................................................................3

2.2 Parameter Buttons ( and ) .................................................................................4

2.3 Function Buttons ( and ) .............................................................................................4

2.4 LED Status Window ...................................................................................................4

2.5 Value Setting Buttons ( and )...........................................................................4

2.6 Outputs List With LEDs............................................................................................5

3. Inputs/Outputs Table .............................................................................................................6

4. Equipment ...............................................................................................................................6

5. Configuration Versions ..........................................................................................................6

6. Ventilation System Overview ................................................................................................7

7. Glossary ...................................................................................................................................7

8. Description of Parameters .....................................................................................................8

9. Alarm .....................................................................................................................................18

10. Additional Information on Parameters...........................................................................18

10.1 Clock ..........................................................................................................................18

10.2 Probe ..........................................................................................................................18

11. Supplementary Information on CI-1/24 .........................................................................19

12. Parameter Table................................................................................................................20

13. Wiring Diagram ................................................................................................................25

SR-242 USER’S GUIDE

41D01C7 (F7) Page 3 of 3 02/04/30

1. Introduction

The SR-242 is a powerful control which can be programmed to work in many types of

situations. By developing a configuration logic, the SR-242 can meet the needs of

your specific application. The configuration logic or software is the brain of the control

system, and basically makes the relation between the sensor readings, the user

adjusted parameters, and the activation or deactivation of outputs. This software is

stored in a chip identified with a configuration number, as shown in the title of this

document, and as it appears on your left hand side label of your control. Always keep

on hand this configuration number when you are contacting your dealer.

To fully understand your SR-242, it is important to read both the SR-242

Installation Guide and this User’s Guide. The Installation Guide informs you on: how

to install the control system, safety issues, warranty and many others characteristics

of the SR-242 whereas the User’s Guide is a document which explains the specific

configuration logic. This control also features limited access to parameters for

employees (referred to as the user in this document) and gives full access for the

supervisor.

Temperature units in this document are represented in both °F and °C for information

purposes only. The temperature unit programmed in your configuration is either in °F

or °C and cannot be changed.

2. Faceplate

The SR-242’s faceplate features a LED Status window, 1

parameter list, 1 outputs list with 11 LEDs, 2 function buttons

(L2 and L3), 2 parameter buttons ( and ) and 2 value

setting buttons ( and ). Below is a brief description of all

features, from left to right on the faceplate.

2.1 Parameter List

On the left-hand side of the faceplate appears a list of the

parameters programmed in the ordered configuration. Due to

limited space, not all parameters (with secondary and tertiary

functions) are listed.. All parameters that do not show up on

the parameter list can be accessed with the arrow parameter

buttons ( and ).

SR-242 USER’S GUIDE

41D01C7 (F7) Page 4 of 4 02/04/30

2.2 Parameter Buttons (and )

The parameter buttons are represented by the 2 squares with

arrows in them. Pressing the up ( ) or down arrow( ) will

move the parameter list up or down.

2.3 Function Buttons (and )

The round section buttons help users to select extra settings

which appear on the list with L2 and L3 symbols. These

settings may be accessed first by selecting the main parameter

with the parameter buttons ( and ). Whenever there is a

main parameter with only one L2, or one L3, simply press on

the L2 or L3 again to return to the main parameter or wait for

it to automatically switch to the main parameter. When the

main parameter has multiple L2, the user must scroll back to

the main parameter using the L2 button.

2.4 LED Status Window

The LED status window features a 5 digit LED readout display

of temperature in Fahrenheit or Celsius, or other

programmable settings. After a setting is selected, its value

appears on the LED display. If the value is flashing, it can be

changed with the value setting buttons ( and ).

2.5 Value Setting Buttons (and )

The value buttons appear as 2 squares with a + and - sign in

them. They are used to increase or decrease the value on the

LED window. Press the button once and release it to increase

or decrease the value by one increment. The value may be

changed quickly by keeping your finger on either button.

SR-242 USER’S GUIDE

41D01C7 (F7) Page 5 of 5 02/04/30

2.6 Outputs List With LEDs

On the right-hand side of the faceplate appear 11 LEDs (1

alarm and 10 multi-purpose outputs) next to which is a list of

10 outputs. A LED comes ON whenever the respective output

is active, in alarm or in a particular state.

SR-242 USER’S GUIDE

41D01C7 (F7) Page 6 of 6 02/04/30

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Inputs Qty Outputs Qty

Inside temperature 3 Variable Fan stages (can be heaters) 2 to 4

Ambient temperature 1 ON/OFF Fan stages (can be heaters) 4 to 6

Curtains 2

Inlets (Optional) 1 to 2

Alarm 1

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Item Description Qty

SR-242 Intelligent Control, 4 inputs / 10 outputs 1

2004-1KLT Temperature Sensor (-41.8 to 74.4°C) (-43.6 to 166.2°F) blue 4

CI-1/24 ** (Optional) Cable Inlet (24 volts) 1 to 2

RM-2 (Optional) Relay module 1

VM-2 (Optional) Variable Module (10Amps) 1

** CI-1/24 version must be 110b or higher.

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Version Date Modification

C0 01/06/14 New. (CheckSum: BDB1673E)

C0(F0) 01/02/10 Modification on output order ( CheckSum for C0: 6DF6C6F7,

CheckSum for F0: 9AEA37CE)

v1 01/11/07 Modification on Curtain #2 logic.

v2 02/01/23 - Supervisor Code added

- Tunnel Mode Delay added

- Curtain #2 Open Time added

- Modification on Sensor Select parameter

- “Percent Exhaust Fan” logic added for Cable Inlet position

- Curtains can move in tunnel mode if selected

v3 02/02/04 - Curtains position in Emergency Mode corrected

v4 02/02/08 - Output 7 & 8 on RM-2 or VM-2 Corrected

v5 02/02/20 - Curtains Modes Select changed (1 to 8)

- Tunnel Mode Delay logic changed

- Outputs Sensor Select changed

v6 02/04/26 - Stage transition while Tunnel Mode Delay modified

- Manual mode for curtains corrected

- Sensor select added for curtains

- CI-1/24 diagnostic parameter added

v7 02/04/30 - Correction on both curtains in Emergency Mode

- Curtain positions saved when respective status is “don’t move”, used to keep position

when a reset occurs.

- CI-1/24 diagnostic parameter removed

- Second CI-1/24 added

- Supervisor code changed

SR-242 USER’S GUIDE

41D01C7 (F7) Page 7 of 7 02/04/30

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This configuration was developed for a mechanical, natural, tunnel ventilation building. All output stages

can be either heating or cooling. Stages 7 and 8 have an option to be ON/OFF stages or variable stages

or an Inlet(s) output (1 to 2). This configuration can run in 4 different modes: Mechanical, Natural, Tunnel,

Emergency. This configuration is also equipped with a Test Mode

Modes description:

Mechanical Mode is the default mode when the control is turned ON, curtains close.

Control goes in Natural Mode when the CURTAIN #1 SENSOR SELECT has reached TARGET TEMP +

CURTAIN #1 BAND. The control returns to Mechanical Mode when CURTAIN #1 SENSOR SELECT is

below TARGET TEMP + CURTAIN #1 BAND - 1.0°C and it calculates that both curtains are closed.

Control goes in Tunnel Mode when the AVERAGE TEMPERATURE has reached TARGET

TEMP +

TUNNEL

BAND. The control returns to Natural Mode when the AVERAGE TEMPERATURE drops to

TARGET

TEMP + (TUNNEL

BAND / 2), curtains respectively open for a delay equal to CURT 1 OPEN

RUNTIME and CURT 2 OPEN RUNTIME parameter.

Note: - To go in Natural Mode, Curtain #1 must be enabled for Natural Mode, otherwise no Natural Mode will be

possible

- To go in Tunnel Mode, TUNNEL BAND must not be set to OFF, otherwise no Tunnel Mode will be possible

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Throughout this document, the following terminology is used:

Target This is the Temperature goal for the room and it is also the reference temperature

for all relative settings.

On Band Number of degrees relative to the Target where an output will turn ON for relay

stages or reaches 100% for variable stages.

Off Band Number of degrees relative to the Target where an output will turn OFF for relay

stages or turn ON at minimum speed for variable stages until the respective Min

Band is reached. If the On Band is higher than the Off Band, the stage will be set

to cooling, otherwise the stage will be set to heating.

Min Band Number of degrees relative to the Target where an output of variable stage

accelerates his speed from Minimum Speed to 100% when the On Band has

been reached.

Minimum Speed This is to control the minimum speed of variable stages when the Off Band has

been reached, until the Min Band has been reached to start acceleration.

Run Time This is to set the duration time of a single movement of the curtain whether opening or

closing.

Idle Time This is to set the length of time the control waits before moving the curtains another

movement.

Fast Idle Time This is to set the length of time the control waits before moving the curtains in the

closed direction when the average room temperature is below the Target temperature.

ON / OFF Duration This is to set the timespan the output will be turned ON / OFF on a temperature

demand.

SR-242 USER’S GUIDE

41D01C7 (F7) Page 8 of 8 02/04/30

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ATTENTION: Expressions in ITALICS are user’s parameters whereas expressions in COURIER are

supervisor’s parameters. Supervisor’s parameters are read only or hidden for the user. Expressions in

CAPITALS are reading parameters and can not be changed with the interface.

- All the following descriptions refer to the wiring diagram at the end of this document.

- All the timers can have an imprecision of approximately 6 seconds.

- Temperature is measured in Celsius or Fahrenheit.

- Both curtains must be completely closed before downloading configuration.

- Curtain position is saved when respective curtain doesn’t move, this feature is used to keep curtain

positions when a reset occurs.

Parameter # 1 : AVERAGE TEMPERATURE

This parameter displays the average temperature. The average is made from the 3 inside temperature

sensors. Each sensor can be deactivated in this average with the AVG SENSOR SELECT parameter

setting. This parameter is displayed to the nearest 0.1° from a minimum display of -41.8°C (-43.6°F) to

maximum of 74.4°C (166.2°F).

L2: see Note 1

L3: see Note 2

Parameter # 2 : SENSOR 1

This parameter displays sensor 1 temperature. This sensor can be deactivated with the AVG SENSOR

SELECT parameter setting. This parameter is displayed to the nearest 0.1° from a minimum display of

-41.8°C (-43.6°F) to maximum of 74.4°C (166.2°F).

L2: see Note 1

L3: see Note 2

Parameter # 3 : SENSOR 2

This parameter displays sensor 2 temperature. This sensor can be deactivated with the AVG SENSOR

SELECT parameter setting. This parameter is displayed to the nearest 0.1° from a minimum display of

-41.8°C (-43.6°F) to maximum of 74.4°C (166.2°F).

L2: see Note 1

L3: see Note 2

Parameter # 4 : SENSOR 3

This parameter displays sensor 3 temperature. This sensor can be deactivated with the AVG SENSOR

SELECT parameter setting. This parameter is displayed to the nearest 0.1° from a minimum display of

-41.8°C (-43.6°F) to maximum of 74.4°C (166.2°F).

L2: see Note 1

L3: see Note 2

SR-242 USER’S GUIDE

41D01C7 (F7) Page 9 of 9 02/04/30

Parameter # 5 : AMBIENT

This parameter displays the ambient sensor temperature. This parameter is displayed to the nearest 0.1°

from a minimum display of -41.8°C (-43.6°F) to maximum of 74.4°C (166.2°F).

L2: see Note 1

L3: see Note 2

Note 1:

This parameter displays the probes which make the average. To access these readings, press L2 and the

readings of each probe will show on the LED display.

Note 2:

In addition to the sensor readout, the parameter can record the lowest and highest value reached. To

access the Hi/Lo function, press L3 of the respective SENSOR # parameter. To clear the respective Hi/Lo

values, after pressing L3, press and hold the + and - buttons until CLR appears on the LED display.

For more information on the Probe parameter, see the Additional Information on Parameters section.

Parameter # 6 : CLOCK

Gives the time in 24h format.

L2: ADJUST MINUTES

Adjust minutes for CLOCK function.

L3: ADJUST HOURS

Adjust hours for CLOCK function.

For more information on the Clock parameter, see the Additional Information on Clock section.

Parameter # 7 : TARGET TEMP

This is the temperature goal for the room and it is also the reference temperature for all relative settings.

The TARGET TEMP

is adjusted in 0.1° increments from a minimum setting of 0.0°C (32.0°F) to maximum

setting of 40.0°C (105.0°F).

L2: TUNNEL BAND

This parameter is used to set the bandwidth, which, when exceeded, changes the mode that the control is

currently in if this parameter is not set to OFF. The control returns to Natural Mode when the AVERAGE

TEMPERATURE drops to ½ of the TUNNEL BAND (if curtain #1 is enabled in natural mode). If there is no

natural mode and AVERAGE TEMPERATURE drops to ½ of the TUNNEL BAND,control goes in

mechanical mode. The TUNNEL

BAND is adjusted in 0.1° increments from a minimum setting of 0.0° to

maximum setting of 40.0°, OFF.

L3: ALARM BAND

This parameter is used to set the alarm bandwidth for a high or low temperature alarm. When the

AVERAGE TEMPERATURE is below the TARGET

TEMP - ALARM

BAND, a low temperature alarm will

occur. When the AVERAGE TEMPERATURE is above the TARGET

TEMP + ALARM

BAND, a high

temperature alarm will occur unless the AMBIENT is above the TARGET

TEMP, in which case the

AVERAGE TEMPERATURE needs to be higher than the AMBIENT + ALARM

BAND. The ALARM

BAND is

adjusted in 0.1° from a minimum setting of 0.5° to maximum setting of 40.0°.

SR-242 USER’S GUIDE

41D01C7 (F7) Page 10 of 10 02/04/30

Parameter # 8 : STAGE # (1-2, 7-8)

L2: STAGE # MIN BAND

These parameters are used to set the number of degrees from the TARGET

TEMP in which the respective

output of variable stage will accelerate from its minimum speed to its STAGE # ON BAND (cooling stage)

or will keep running at its minimum speed until the STAGE # OFF BAND has been reached (heating

stage). These settings must be between respective ON BAND and OFF BAND. These parameters are

adjusted in 0.1° increments from a minimum setting of -40.0° to a maximum setting of 40.0°.

L3: STAGE # MIN SPEED / MIN OPEN

These parameters are used to set the minimum speed of the respective output of a variable stage. If

Stage7/8 are used for an inlet(s), this parameter sets their minimum opening when the calculated result of

the “% Exhaust Fan” logic for inlet(s) opening is less than the INLET MIN BAND parameter. If Stage 7/8

are not used for an inlet(s) and STAGE # 7 MIN OPEN value setting is under 12%, this parameter will be

considerate as OFF. These parameters are adjusted in 1% increments from a minimum setting of 12%

(0% for STAGE # 7 MIN OPEN) to a maximum setting of 100%.

Parameter # 9 : STAGE # (1 to 8)

Both these settings can be either positive or negative. If STAGE # ON BAND is higher than the respective

STAGE # OFF BAND, the respective stage will be set to cooling, otherwise the stage will be set to

heating.

L2: STAGE # ON BAND

These parameters are used to set the number of degrees from the TARGET

TEMP in which the respective

output of a variable stage will reach 100% of their speed or will turn ON for a relay stage. These

parameters are adjusted in 0.1° increments from a minimum setting of -40.0° to a maximum setting of

40.0°.

L3: STAGE # OFF BAND

When the stage is set to cooling, for relay stage when temperature decreases to TARGET

TEMP + STAGE

# OFF BAND the stage will turn OFF, for a variable stage when temperature reaches TARGET

TEMP +

STAGE # OFF BAND,the stage will turn ON at their minimum speed, if temperature decreases to

TARGET

TEMP + STAGE # OFF BAND - 0.3° the stage will turn OFF. When the stage is set to heating, for

relay stage when the STAGE # OFF BAND has been reached the stage will turn OFF, for variable stage

when temperature decreases to TARGET

TEMP + STAGE # OFF BAND the stage will turn ON at their

minimum speed, if temperature increases to TARGET

TEMP + STAGE # OFF BAND + 0.3° the stage will

turn OFF. There is a differential of 0.3° for variable stages. These parameters are adjusted in 0.1°

increments from a minimum setting of -40.0° to maximum setting of 40.0°.

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