Danfoss DGS Series User Manual

Danfoss Gas Sensor

Type DGS
Modbus or Service Tool display operation

User Guide

danfoss.com

Contents Page

1. Intended use .....................................................................................4

2. Content ..........................................................................................4

3. Operation ........................................................................................4

3.1 Function of the keys and LEDs on the keypad ................................................6

3.2 Setting / changing of parameters and set points .............................................6

3.3 Code Levels.................................................................................7

4. Menu Overview ..................................................................................7

4.1 Error status ............................................................................... 10

4.2 Alarm Status .............................................................................. 10

4.3 Relay Status............................................................................... 10

4.4 Menu Measuring Values ................................................................... 11

4.5 Display Parameters........................................................................ 11

4.5.1 Software Version ........................................................................ 11

4.5.2 Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.5.3 LCD Function Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.6. Measuring Point Parameters ..............................................................12

4.6.1 Alarm limits ............................................................................. 12

4.6.2 Alarm delay ............................................................................. 12

4.7 Menu System Parameters..................................................................13

4.7.1 AO function .............................................................................13

4.8 Operating data............................................................................ 14

4.9 Calibration................................................................................ 15

4.9.1 Zero Calibration .........................................................................16

4.9.2 Gain Calibration .........................................................................17

4.9.3 Zero-point calibration of Analog output.................................................. 18

4.10 Addressing .............................................................................. 18

5. Modbus menu survey .......................................................................... 19

6. Technician use only! ............................................................................ 22

6.1 Regular test............................................................................... 22

6.2 Locaton................................................................................... 22

7. Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

User Guide | Danfoss Gas sensor. Type DGS. Modbus or Service Tool display operation

2 | RS8KD102

© Danfoss | DCS (ADAP-KOOL®) | 2018.12

User Guide | Danfoss Gas sensor. Type DGS. Modbus or Service Tool display operation

© Danfoss | DCS (ADAP-KOOL®) | 2018.12

RS8KD102 | 3

User Guide | Danfoss Gas sensor. Type DGS. Modbus or Service Tool display operation

4 | RS8KD102

© Danfoss | DCS (ADAP-KOOL®) | 2018.12

1
Intended use

The display of the handheld Service Tool and the
Modbus interface for integration with Building
Management Systems is used as interface for
operation, commissioning and calibration of the
DGS gas detection unit

2
Content

This user guide contains the maximum possible
functionality of concerned display devices.

Depending on the DGS type some features
described here are not possible and therefore the
menu items may be hidden.

Some features are available from Modbus or
handheld Service Tool interface only. Differences
is highlighted in this document.

3
Operation

The configuration and service is made via the
handheld Service Tool or in combination with the
Modbus interface.
Security is provided via password protection
against unauthorized intervention.

Handheld Service Tool:

Operation is done via 6 buttons.

AK-SM 800 Front End:

The configuration is done via the graphical
display and buttons or via the PC tools
StoreView Desktop or AK-ST 500.

Gas D etection Service Tool

Esc

←─

D1 CO2 ppm
Warm-up Time

DGS Service Tool

User Guide | Danfoss Gas sensor. Type DGS. Modbus or Service Tool display operation

© Danfoss | DCS (ADAP-KOOL®) | 2018.12

RS8KD102 | 5

Operation with the handheld Service Tool is
described in sections 3.1 and 3.2 and chapter 4.

Operation with the Danfoss Front End is
described in chapter 5.

2 functions are configured via jumpers on the
DGS.

Jumper 4, JP 4, located on the bottom left is used
to configure the Modbus baud rate.
As default the baud rate is 38.400 Baud. By
removing the jumper the baud rate is changed to

19.200 Baud. Removing the jumper is required for
integrating with Danfoss System Managers AK­SM 720 and AK-SM 350.

Jumper 5, JP5, located on the top left is used to
configure the analogue output type.
As default this is Voltage output. By removing the
jumper this is change to Current output.

Note: the DGS must be power cycled before any
change to JP4 take effect.

JP5

5

4

2

1

not used

GND

AO_01

DI_01

S&H supply

x1

open: 0-20mA
closed: 0-10V

LED
Yellow/Green/Red

1

2

3

1

2

3

x6

x5

Rel. 3

Rel. 1

x4

4

3

2

1

not used

JP3
JP2
JP1

x3

Ackn.-/Test
button

Sensor 1

Sensor 2

Tool

x9

x2

x8

B&L

JP4

Danfoss

80Z790.1

1

open: 19200 Baud
closed: 38400 Baud

B­Modbus
A+

-

24V ac/dc

+

(critical)

(warning)

User Guide | Danfoss Gas sensor. Type DGS. Modbus or Service Tool display operation

6 | RS8KD102

© Danfoss | DCS (ADAP-KOOL®) | 2018.12

3.1
Function of the keys and LEDs
on the keypad

Exits programming, returns to the previous menu level.

Enters sub menus, and saves parameter settings.

Scrolls up & down within a menu, changes a value.

Change of cursor position.

The status LEDs indicate the operating state.

• Green
Continuous = Operating voltage
Flashing = Maintenance message

• Yellow
Continuous = Failure
Slowly flashing = Warming-up
Fast flashing = Special mode

• Red = Alarm

The backlight of the display changes from green
to red when an alarm is active.

3.2
Setting / changing of
parameters and set points

Open desired menu window.
Code input field opens automatically, if no code is approved.

Set the desired parameter / set point with the keys.

After input of valid code the cursor jumps onto the first position segment to be changed.

Push the cursor onto the position segment, which has to be changed.

Save the changed value, confirm storage (ENTER).

Cancel the save / close editing / return to a higher menu level (ESCAPE function).

User Guide | Danfoss Gas sensor. Type DGS. Modbus or Service Tool display operation

© Danfoss | DCS (ADAP-KOOL®) | 2018.12

RS8KD102 | 7

3.3
Code Levels

All inputs and changes are protected by a
four-digit numeric code (= password) against
unauthorised intervention according to the
regulations of all national and international
standards for gas warning systems. The menu
windows of status messages and measuring
values are visible without entering a code.

The access to the protected features is cancelled
automatically if no button is pushed within 15
minutes.

The service technician access code to the
protected features is ‘1234’

4
Menu Overview

Menu operation is done via a clear, intuitive and
logical menu structure. The operating menu
contains the following levels:

• Starting menu with indication of the device
type if no Measuring Point is registered,
otherwise scrolling display of the gas
concentrations of all registered sensors in
5-second intervals. If alarms are active, only the
values of the sensors currently in alarm status
are displayed.

• Main menu

• 5 sub menus under “Installation and
Calibration”

Power On Time of the basic device
Second counter counts down, when communication display <> basic
device is OK. In case of communication error the count-down will stop.

“Warm-up Time” is displayed. As soon as the sensor warm-up time has
expired, the measured value is displayed = measuring mode.

Seconds indicator = 0

After about 2 seconds

Power On Time
19s

Danfoss

DGS

D1 CO2 ppm
Warm-up Time

User Guide | Danfoss Gas sensor. Type DGS. Modbus or Service Tool display operation

8 | RS8KD102

© Danfoss | DCS (ADAP-KOOL®) | 2018.12

4
Menu Overview

(Continued)

Starting menu

Main menu

Error Status

Alarm Status

Relay
Status

Measuring Values

Display
Parameters

Installation &
Calibration

Reading and acknowledgement of errors
See chapter 4.1

Display of the status of active alarms
See chapter 4.2

Display of the relay status. Protected by password.
See chapter 4.3

Display of measuring values
See chapter 4.4

Read-out of handheld tool version, language and set-up of language.
Partly protected by password
See chapter 4.5

Reading and change of the relay, measuring point and
system parameters as well as test and calibration functions

Chapter #