Danfoss GD Heavy Duty Data sheet

Data Sheet

Gas detection unit

Heavy duty

Type GD Heavy Duty Next generation gas detection for industrial refrigeration

The Heavy Duty gas detection units are used for monitoring and warning of hazardous Ammonia gas concentrations. They are intended for ATEX/ IECEx applications and consists of a robust ameproof metal enclosure that can be kept closed after wiring, since programming (conguration) is performed by magnetic eld to the display via a magnetic pen.Depending on the application, they are available with an electrochemical, a semiconductor or a Pellistor sensor covering a wide range of ppm.

The Heavy Duty gas detection units are intended as Stand-alone, or connected to a central system like Gas Detection Controller Unit, or a PLC.

As stand-alone the on-board relay can be used for activation of alarm devices, while the Analog or RS485 Modbus connection to a central system allows additional centralized monitoring and alarm activation.

The gas detection units come with a factory default, 2-step alarm set-up ready for use. The integrated software enables the user to congure two individual alarm ranges. Alarm 1, a pre-alarm indicating the gas level has passed a predened threshold 1, and - if the gas level passes predened threshold 2 - the nal alarm

AI272547483504en-000501

Gas detection unit, Heavy duty

Features

• Digital, factory congured and pre-calibrated gas detectors for plug-and-play installation (no adjustment required)

• Easy conguration via Display and Magnetic pen and intuitive user-interface; helps simplify operator handling and minimize risk of operational, settings and calibration errors

• Stand-alone (integrated relay) and/or exible connection to central controller - by either Analog or RS485 open Modbus communications

• Wide selection of sensor types and detection ranges

• Display background color indicating alarm or communication fault by turning red

• Fieldbus wiring - connect and power up to 96 sensors, wire length max. 900 meters (2953 ft) per segment; controller expansion modules permits additional segments and alarm relays

• Automatic self-diagnostics to ensure correct communication and operation. On board fault relay

• Sensor seal cap to prevent premature exposure during installation

• Digital user interface ensures high sensor accuracy

• Reduced risk of false alarms due to temperature compensated sensors

• Password protected alarm settings allowing authorized access only

• LCD display with status LED

• Magnetic pen/On-board acknowledge button to reset alarms and to verify that no gas leaks are present

• Service alerts on unit, controller or both, readable via service tool Display

• Quick and precise calibration procedures - either by Plug & Play replacement sensors or calibration with gas

• No potentiometers or multi-meters required

• For improved safety and to optimize the lifetime of the sensor, degenerated sensors with too low sensitivity (<30%) are rejected during calibration process

• Conformity to Ex d EN60079-0, -1, Ex d IEC 60079-0, -1, EN 50402, EN 61508-1, -2, -3, EN 50271

• Certicate BVS 18 ATEX E 052 X, IECEx BVS 18.0044X

• Enables regulatory compliance with EN 378:2016, ISO 5149:2014, IIAR 2-2017, and ASHRAE 15:2016

Gas detection unit, Heavy duty

Functions

Working principle/Operation

One sensor is connected to the Heavy Duty sensor board via local bus. The Sensor board provides the power supply of the sensor and prepares the measured data for digital communication.

The operation menu of the Heavy Duty software is accessed through the Display via a Magnetic pen, or the connected Gas Detection Controller, or via the dedicated GD Service tool (or PC tool). The Service tool (or PC tool) is plugged directly to the board of the unit by use of an adapter. These interfaces allow the unit conguration, setting of the unit alarm levels and calibration of the attached sensor.

The service tool (or PC tool) can be used on all units across the Basic, Premium and Heavy Duty platforms.

For Stand-alone units the alarm signals are handled by the unit software, which activates the integrated relay directly. For central controlled units the alarm signals are handled by the Gas Detection Controller (or a PLC) via the 4-20 mA (2-10V) analog output or the RS485 open Modbus communication.

For additional operational safety the changing of parameters is password protected allowing authorized access only. The factory default password can easily be customized.

Sensor

ESC

Sensor

Sensor Type

ppm range

Alarm 1(Alarm relay)

Alarm 2

Hysteresis

Ammonia EC 100

Electrochemical

0 – 100

25 ppm

35 ppm

2 ppm

Ammonia EC 300

Electrochemical

0 – 300

25 ppm

150 ppm

2 ppm

Ammonia EC 1000

Electrochemical

0 – 1000

500 ppm

900 ppm

25 ppm

Ammonia EC 5000

Electrochemical

0 – 5000

1000 ppm

4500 ppm

50 ppm

Ammonia SC 10000

Semiconductor

0 – 10000

5000 ppm

9000 ppm

250 ppm

Ammonia P LEL

Pellistor

0 – 140000 (0 – 100% LEL)

21% LEL (30000 ppm)

1% LEL

HC R290/Propane P 5000

Pellistor

0 – 5000

800 ppm

2500 ppm

40 ppm

Details

Description

Power supply

20 – 28 V DC

Power consumption (24 V DC)

90 mA, max. 130 mA

Control unit

Microprocessor with 12 bit converter resolution

Digital

lter

Averaging in order to increase the EMC immunity

Visual indications

2 LEDs for operation, alarm and communication

Gas detection unit, Heavy duty

Product specication

Design

General info

• Cable gland mounted

• Sensor head (SX1) mounted bottom

Figure 1: Heavy Duty

Gas types and thresholds

Table 1: Gas types and thresholds



NOTE:

Hysteresis = 5% of Alarm1 (rounded up to the next higher integer) Alarm thresholds must be set within 10 to 90% of the sensor range.

Electrical

Table 2: Electrical

Details

Description

Analog output signal (active)

Proportional, overload and short-circuit proof, load ≤ 500 Ω

4 – 20 mA = measuring range

3.0 < 4 mA = underrange

> 20 – 21.2 mA = overrange

2 mA = fault

> 21.8 mA = fault High

Serial interface

Serial data bus

Fault relay

Max. 30 V AC/DC, 1 A

Alarm relay

Max. 30 V AC/DC, 1 A

LCD

2 x 16 characters, 3 status LEDs, 4 menu operating elements

Details

Description

Gas type

Flammable gases

Toxic gases

HCFC, HFC, HFO

Sensor element

Pellistor

Electro Chemical

Semiconductor

Measuring range

0 – 100 % LEL

0 – 1000 ppm / 0 – 5000 ppm

0 – 10000 ppm

Response time

t90 < 20 sec. NH

t90 < 40 sec. for NH

t₉₀ > 120 sec. for NH

Details

Description

Material

CrNi Stahl: 1.4404

Dimensions (d x H)

30 x 56 mm (1.18 x 2.20 in.)

Protection class

Gas inlet IP64, with option splash-proof IP65

Thread

External thread M30 x 1.5

Details

Description

Humidity

15 to 90% r.H.

Operating temperature

-40 °C to +60 °C / EC: -40 °C to +50 °C / SC: -40 °C to +50 °C

Details

Description

Case / colour

Aluminium pressure die-casting / light grey RAL 7032, epoxy coating

Dimensions (d x H)

95 x 82 mm

Weight

Ca. 1.3 kg

Protection class

Housing protection IP66 to IP68 (depending on the cable glands used)

Mounting

Wall mounting (sensor head downwards)

Cable entry

1 x

⁄ in. (Ansi B1.20.1)

Wire connection

Spring-type terminal, 0.08 to 2.5 mm² AWG 28 - 12

Wire length

Max. load 500 Ω (= wire resistance + controller input resistance)

ll 2G Ex db IIC T4 Gb CE 0539

Gas detection unit, Heavy duty

Sensor data

Table 3: Sensor data

Sensor head housing

Table 4: Sensor head housing

Environmental conditions

Table 5: Environmental conditions

Physical characteristics

Table 6: Physical characteristics

ATEX marking

Table 7: ATEX marking

Details

Description

LCD

Two lines, 16 characters each, background highlighted in two colours

Operation

Menu driven via four magnetic buttons

Power consumption

5 V, 60 mA, 0.3 VA

Details

Description

Colour / Mode

Red / yellow / green (alarm – fault – operation - service)

Protection class

IP65

Gas detection unit, Heavy duty

LCD display

Table 8: LCD display Options

Status LED

Table 9: Status LED

Service and maintenance

The Heavy Duty gas detection units are calibrated either by replacing of sensor heads or by calibration with gas.

Plug & Play replacement sensors are pre-calibrated and factory certied for quick and easy calibration procedure. The sensor is connected to the local bus via a plug connection enabling easy and simple exchange of sensor instead of a calibration. The internal X-change routine recognizes the exchanged sensor during the exchange process and restarts the measurement mode automatically. An LED indicates the correct procedure of the exchange operation.

To ensure the proper functioning of the units and to prevent human errors, the sensor head can only be replaced by the same type and ppm range (exact replacement) that match the conguration. If a dierent sensor head is installed, the GD unit will show a communication error.

As an alternative, calibration with gas can be performed via the service tool (or PC tool), calibration gas with correct concentration and the Danfoss calibration adapter. The Danfoss gas detection units have an integrated, digital calibration interface and procedure, which makes the calibration process easy, accurate, and time-saving. No potentiometers or multi-meters required for the calibration. The calibration procedure requires signicantly less calibration gas per calibration compared to traditional routines.

BUS_A

GND

+24 V DC

2 +24 V DC

56BUS_B

4 - 20 mA output

Fault relaisene rgized in operating mode at No alarm

- Default

Alarm relaisd e-energized in operating mode at No alarm

- Default (Conﬁgurable)

Sensor PX2

Danfoss 148H122_11-2018

Danfoss

11L9005

ool

tus

LED

But

ensor

head

NPT ¾”(ANSI B1.20.1)

Internal Thread

Closed

NPT ¾”(ANSI B1.20.1)

Internal Thread

Sensor

1 FAILUREPOWER 2ALARM 3

D1 NH₃ PPM 0,00

1 3

= Ackn. button

Heavy Duty PCB

Status LEDs

Ackn.-/ Testbutton

ool

tus

LED

But

ensor

head

Sensor

Heavy Duty PCB

Status LEDs

Ackn.-/Test button

= Ackn. button

Fault relays( relay 2) energized in operating mode at No alarm

- Default

Alarm relays( relay 1)

de-energized in operating mode at No alarm

- Default (Conﬁgurable)

Output

Sensor PX2

BUS_A

BUS_B

Gas detection unit, Heavy duty

Electrical connection

Figure 2: Electrical connection

On board LED is similar to the display LED:

• Green (1) is power on

• Yellow (2) is an indicator of Error.

◦ when the sensor head is disconnected or not the expected type ◦ AO is activated but nothing connected

• Red (3)

◦ on alarm

On board Ackn. -/Test button:

• Test:

◦ The button must be pressed for 20 sec. ◦ Alarm is simulated, stop on release

• Ackn.:

◦ Pressed while Alarm2, the audible warning switches o and goes back on after 5 min. when the alarm situation

is still active (also possible over ESC button (use the magnetic pen).

= Terminating resistor 560 Ohm

= GDU (Basic, Premium and/or Heavy Duty)

RIGHT

WRONG

Controller

unit

Controller

unit

Wire length max. 900 meter (2953 ft) per segment. More segments with additional expansion modules max. 7200 meter (23622 ft). Additional power limitations must be calculated.

Danfoss 11L9007

Wire length max. 900 meter (2953 ft) per segment. More segments with additional expansion modules max. 7200 meter (23622 ft). Additional power limitations must be calculated.

Controller

unit

Controller

unit

= Terminating resistor 560 Ohm

= GDU (Basic, Premium and/or Heavy Duty)

RIGHT

WRONG

GDU Addr. 05 GDU Addr. 04

560 R

Controller Unit

0 V DC

24 V DC

BUS_B

BUS_A

0 V DC

24 V DC

4 3 2 1

Heavy Duty GDU: U

min

=20 V DC

Other GDU: U

min

= 16 V DC

GDU Addr. 01 GDU Addr. 02 GDU Addr. 03

Danfoss

11L9006

GDU Addr. 05 GDU Addr. 04

GDU Addr. 01 GDU Addr. 02 GDU Addr. 03

Controller

unit

Gas detection unit, Heavy duty

Fieldbus loop

Each GD controller can handle up to 96 sensors and handle any mix of individual Gas detection units of the types Basic, Premium and Heavy Duty.

The max. recommended loop wire length is 900 meter (2953 ft) per segment.

With additional segments (and additional controller expansion modules) the max recommended loop wire length is 7200 meter (23622 ft).

The controller and the last GDU in each segment must be provided with a resistor of 560 Ohm. A Umin of 16 V DC must be secured at any spot in the loop.

Figure 3: How to make proper connections between the controller and each GDU

Figure 4: How to make proper connections between the controller and each GDU

* Time delay set in conﬁg.

Danfoss

11L9008

Gas

Alarm1

Alarm2

LED Red

If ackn. button

not pressed

If ackn. button

pressen after

Alarm

Ackn.

Alarm2

Alarm1

Alarm2

Alarm1

LED Red

If ackn. button

pressed after

Alarm

If ackn. button

not pressed

Ackn.

LED

Ackn.

LED

Alarm2

Alarm1

* Time delay set in conﬁg.

Gas

Alarm1

Alarm2

Alarm1

Alarm2

Blinking (2 sec.)

Fast blinking (1 sec.)

Very fast blinking (0.1 sec.)

Power LED

Failure (e.g. sensor head is disconnected)

Slow blinking, sensor warm up

Fast blinking, sensor is in special mode (e.g. to change parameters, ...)

Gas detection unit, Heavy duty

Alarm scheme

Figure 5: Status LED

Type

Model

Display

included

Refrigerant

Sensor

ppm (range)

Alarm ppm

Temp range

( °C)

Temp range

( °F)

Code

number

GDA

Heavy Duty

Yes

Ammonia

Electrochemical

0 – 100

25/35

-20 to +50

-4 to +122

148H6059

Heavy Duty

Yes

Ammonia

Electrochemical

0 – 300

25/150

-20 to +50

-4 to +122

148H6060

Heavy Duty

Yes

Ammonia

Electrochemical

0 – 1000

500/900

-20 to +50

-4 to +122

148H6022

Heavy Duty

Yes

Ammonia

Electrochemical

0 – 5000

1000/4500

-20 to +50

-4 to +122

148H6031

Heavy Duty

Yes

Ammonia

Semiconductor

0 – 10000

5000/9000

-20 to +50

-4 to +122

148H6035

Heavy Duty

Yes

Ammonia

Pellistor

0 – 140000 (0 –

100% LEL)

30000 (21% LEL)

-20 to +60

-4 to +140

148H6039

Heavy Duty

Ammonia

Electrochemical

0 – 100

25/35

-40 to +50

-40 to +122

148H6064

Heavy Duty

Ammonia

Electrochemical

0 – 300

25/150

-40 to +50

-40 to +122

148H6065

Heavy Duty

Ammonia

Electrochemical

0 – 1000

500/900

-40 to +50

-40 to +122

148H6066

Heavy Duty

Ammonia

Electrochemical

0 – 5000

1000/4500

-40 to +50

-40 to +122

148H6067

Heavy Duty

Ammonia

Semiconductor

0 – 10000

5000/9000

-40 to +50

-40 to +122

148H6068

Heavy Duty

Ammonia

Pellistor

0 – 140000 (0 –

100% LEL)

30000 (21% LEL)

-40 to +60

-40 to +140

148H6069

GDH

Heavy Duty

Yes

R290 (R1270,

R600A)

Pellistor

0 – 5000

800/2500

-20 to +60

-4 to +140

148H6061

Description

Code number

Replacement sensor - Heavy Duty Ammonia EC 100

148H6240

Replacement sensor - Heavy Duty Ammonia EC 300

148H6241

Replacement sensor - Heavy Duty Ammonia EC 1000

148H6217

Replacement sensor - Heavy Duty Ammonia EC 5000

148H6218

Replacement sensor - Heavy Duty Ammonia SC 10000

148H6219

Replacement sensor - Heavy Duty Ammonia P LEL

148H6220

Replacement sensor - Heavy Duty R290 / Propane P 5000

148H6242

Controller unit

148H6231

Controller solution (controller + enclosure)

148H6221

Controller solution Uptime

148H6237

Warning module (wire break monitoring module)

148H6223

Controller expansion module

148H6222

Service tool

148H6224

PC Tool

148H6235

Calibration adapter Heavy duty

148H6233

Gateway for controller

148H6228

Magnetic pen

148H6229

Gas detection unit, Heavy duty

Ordering

Table 10: Ordering

Spare parts and accessories

Table 11: Spare parts and accessories

Accessories overview

Controller unit

Used for a centralized monitoring and warning. The input signals for the controller are collected via RS485 Modbus or analog communication. The controller can handle up to 96 digital sensors via Fieldbus and four (4) analog input. An additional 28 analog input is possible using seven (7) expansion modules (4-20 mA signal interface). The total number of connected sensors should not exceed 128 sensors. The controller unit can be employed as pure analog controller, as analog/digital, or as digital controller. Conguration is menu-driven via the keypad. For fast and easy conguration, the PC Tool is recommended.

Controller solution

Controller unit placed in an enclosure ready to be connected to a power source. A separate UPS for the controller is available.

Gas detection unit, Heavy duty

Warning module (wire break monitoring module)

The warning module is used for monitoring the circuiting to the warning/alarm devices on a centrally controlled gas detection system. Wire breaks or wire interruptions in the alarm device loop will be reported to the central control.

Controller expansion module

The gas detection Controller Expansion module is used for expansion of the cable coverage in terms of number of loops and the total wire length. Each Controller Unit can handle up to 7 Expansion modules allowing additional 7 segments with a total of 7200 meters (23622 ft.) wiring and a total of 32 relays for alarm device circuits.

Service tool

For interface with units with no display (Basic, Basic+, Premium, Premium+). Acts as a portable display and can be connected to all Danfoss gas detection units. (Heavy Duty w. adapter).

PC tool

The PC tool is a menu-driven and standalone software used for easy addressing, parameter setting, calibration, and data logging of the Basic, Premium and Heavy Duty gas detection units, and the controller unit.

Calibration adapter

The calibration adapter is required for connecting the calibration gas container, via the ow regulator, to the sensor head on the gas detection units. (Two variants, One for Basic and Premium plastic head sensors; one for heavy duty and Premium remote metal head sensors.).

Gateway for controller

The gateway is an addition to the controller and used for communicating via Modbus TCP/IP.

Magnetic pen

The pen is used to operate the Heavy Duty unit display. The Heavy Duty enclosure does not permit direct touch.

File name

Document type

Document topic

Approval authority

DEKRA BVS 18 ATEX E 052 X

Explosive - Safety Certicate

ATEX

DEKRA IECEx BVS 18.0044X

Explosive - Safety Certicate

IECEx

500000219230.AA

Manufacturers Declaration

Similarity

Danfoss

148R6115.AA

EU Declaration

EMCD/LVD

Danfoss

Intertek 4000518

ETL

Gas detection unit, Heavy duty

Certicates, declarations, and approvals

The list contains all certicates, declarations, and approvals for this product type. Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.

Table 12: Valid Approvals

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Spare Parts

Get access to the Danfoss spare parts and service kit catalog right from your smartphone. The app contains a wide range of components for air conditioning and refrigeration applications, such as valves, strainers, pressure switches, and sensors.

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Any information, including, but not limited to information on selection of product, its application or use, product design, weight, dimensions, capacity or any other technical data in product manuals, catalogues descriptions, advertisements, etc. and whether made available in writing, orally, electronically, online or via download, shall be considered informative, and is only binding if and to the extent, explicit reference is made in a quotation or order conrmation. Danfoss cannot accept any responsibility for possible errors in catalogues, brochures, videos and other material. Danfoss reserves the right to alter its products without notice. This also applies to products ordered but not delivered provided that such alterations can be made without changes to form, t or function of the product. All trademarks in this material are property of Danfoss A/S or Danfoss group companies. Danfoss and the Danfoss logo are trademarks of Danfoss A/S. All rights reserved.

Danfoss GD Heavy Duty Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual