Danfoss GD Basic, Basic Data sheet

Data Sheet

Gas detection unit

Basic

Type GD Basic and Basic+ Next generation gas detection for industrial refrigeration

The Basic and Basic+ gas detection units are used for monitoring and warning of hazardous gas concentrations. They can be used for detecting commonly used refrigerants. Depending on the application, they are available with an electrochemical or a semiconductor sensor.

The Basic and Basic+ gas detection units are intended to be connected to a central system like Gas Detection Controller Unit, or a PLC, by either Analog or RS485 open Modbus communications. The central system converts the alarm signal from the Basic unit to activation of alarm devices.

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 treshold 1, and - if the gas level passes predened treshold 2 - the nal alarm 2.

AI272545693488en-000701

Gas detection unit, Basic

Features

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

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

• Flexible connection - by either Analog or RS485 open Modbus communications

• Fieldbus wiring - connect and power up to 96 sensors, wire length max. 900 meter per segment; expansion modules permits additional segments

• Automatic self-diagnostics to ensure correct communication and operation

• Sensor seal cap to prevent premature exposure during installation

• Digital user interface ensures higher sensor accuracy

• Reduced risk of false alarms due to temperature compensated sensors

• Password protected alarm settings allowing authorized access only

• LED status signals and alarms

• Buzzer & Light option for local audio and visual alarms (Basic+)

• On-board acknowledge button to reset alarms and to verify the 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 EN 50271, EN 61010-1, ANSI/UL 61010 1, CAN/CSA-C22.2 No. 61010-1

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

Gas detection unit, Basic

Functions

Working principle/Operation

One sensor can be connected to the Basic/Basic+ 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 Basic/Basic+ software is accessed through 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. The 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.

The alarm signals can be 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.

Basic Basic +

Danfoss

148H132_01-2018

Sensor Sensor

Sensor

Sensor Type

ppm range

Alarm 1

Alarm 2

Hysteresis

Ammonia EC 100

Electrochemical

0 – 100 ppm

25 ppm

35 ppm

2 ppm

Ammonia EC 300

Electrochemical

0 – 300 ppm

25 ppm

150 ppm

2 ppm

Ammonia EC 1000

Electrochemical

0 – 1000 ppm

500 ppm

900 ppm

25 ppm

Ammonia SC 1000

Semiconductor

0 – 1000 ppm

500 ppm

900 ppm

25 ppm

HF R1234yf SC 2000 (FR3)

Semiconductor

0 - 2000 ppm

500 ppm

900 ppm

25 ppm

HFC R134A SC 2000 (FR7)

Semiconductor

0 - 2000 ppm

500 ppm

900 ppm

25 ppm

HFC R404A, R507 SC2000

Semiconductor

0 – 2000 ppm

500 ppm

900 ppm

25 ppm

Ammonia SC 10000

Semiconductor

0 – 10000 ppm

5000 ppm

9000 ppm

250 ppm

Ammonia P LEL

Pellistor

0 – 100% LEL

(0 – 140000)

21% LEL

(30000 ppm)

21% LEL

(30000 ppm)

CO2 IR 20000 (2% Vol.)

Infrared

(0 – 2% Vol)

(0 – 20000 ppm

0.5% Vol

(5000 ppm)

0.9% Vol

(9000 ppm)

0.025% vol (250 ppm)

Details

Description

Power supply

19 – 29 V AC/DC, DC reverse-polarity protected (selected units 100 – 240V AC)

Power consumption (24 V DC)

Max. 250 mA (6 VA)

Gas detection unit, Basic

Product specication

Design

General information

Figure 1: GD Basic and Basic+

• Cable gland not mounted but enclosed

• 4 mounting ears included

• Sensor head mounted bottom right

• Alarm device (Buzzer & Light) mounted bottom left (only Basic +)

Gas types and thresholds

Table 1: Gas types and thresholds

 NOTE:

Hysteresis = 5% of Alarm1 (rounded up to the next higher integer) LEL/LFL = Lower explosive limit / Lower ammability limit

Electrical

Table 2: Electrical

Details

Description

Power supply

5 V DC, 250 mA max., overload, short-circuit and reverse-polarity protected

Details

Description

Local bus

1-wire / 19200 baud

Fieldbus

RS 485 / 19200 baud

Tool bus

2-wire / 19200 baud

Details

Description

Temperature range

-40 °C to +50 °C (-40 °F to 122 °F)

Humidity range

15 – 90 % RH not-condensing

Storage temperature

+5 °C to +30 °C (41 °F to 86 °F)

Storage time

12 months

Details

Description

Housing

Type A

Material

Polycarbonate

Burning behaviour

UL 94 V2

Housing colour

Black

Dimensions (W x H x D in mm)

94 x 130 x 57

Weight (kg)

Approx. 0.3kg (0.8 lbs.)

Protection class

IP65

Installation

Wall mounting

Cable entry

2 x M12 / 3 x M20

Wire connection:

Power supply, eldbus

Screw-type terminals 0.25 to 2.5 mm

(25 AWG to 14 AWG)

Analog output

Screw-type terminals 0.25 to 1.3 mm

(25 AWG to 17 AWG)

Local bus for sensor

3-pin plug connector

Cable lengths local bus for remote sensor board

Max. 5 m (16.4 ft.)

Description

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

4 – 20 mA = measuring range

3.0 < 4 mA = underrange

> 20 – 21.2 mA = overrange

2.0 mA = fault

(congurable)

Details

Description

Colour

3 color light: Green, yellow, red

Acoustic pressure

> 85 dB (A) (0.1 m distance)

Frequency

2300 Hz

Protection class

IP65

Gas detection unit, Basic

Outgoing line local bus

Table 3: Outgoing line local bus

Serial interface

Table 4: Serial interface

General

Table 5: General

Physical

Table 6: Physical

Analog output signal

Table 7: Analog output signal

Status LED / Buzzer & light (only Basic+)

Table 8: Status LED / Buzzer & light (only Basic+)

1 2 4

Bus_B

Bus_A

0 V AC/DC

24 V AC/DC

Ackn. -/Test

button T1

Service Tool

Buzzer & 3-light alarm

Analog Output

Status LED

Green/Yellow/Red

GND

JP5*

Open: 4-20mA Closed: 2-10V AO_01

Jumper

J1 J2 J3

Sensor

Danfoss

148H119_11-2018

Analog Output

Sensor

Ackn.-/Test

button T1

Open: 4 – 20mA

Closed: 2 – 10V

Status LED

Green/Yellow/Red

Jumper

Bus_B

Bus_A

Service Tool

Buzzer & 3-light alarm

Gas detection unit, Basic

Electrical connection

Figure 2: Electrical connection

Status LED:

• GREEN is power on

◦ ashing if maintenance needed

• YELLOW is an indicator of Error

◦ when the sensor head is disconnected or not the expected type ◦ AO is activated but nothing connected ◦ ashing when sensor is in special mode (e.g. when changing parameters)

• RED on alarm, similar to the buzzer & light alarm

Ackn. -/Test button:

• TEST:

◦ The button must be pressed for 20 sec ◦ Alarm1 and Alarm2 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

* JP5 open → AO 4 – 20 mA (Default) * JP5 closed → AO 2 – 10 Volt

 NOTE:

A resistor comes installed on the analog output connections – if analog output is used, remove the resistor.

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.

= Terminating resistor 560 OhmR

= 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 148H123

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

min

= 16 V DC

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

Danfoss

148H139_01-2018

GDU Addr. 05 GDU Addr. 04

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

Controller

unit

Gas detection unit, Basic

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*

Buzzer & 3-light alarm

* Time delay set in conﬁg.

Gas

Alarm1

Alarm2

LED

If ackn. button

not pressed

LED

If ackn. button

pressed during

Alarm2

Ackn.

Buzzer

LED

If ackn. button

pressed after

Alarm

Buzzer

Ackn.

Alarm2

Alarm1

WAO

Housing

Sensor

Danfoss

148H158_03-2018

Alarm1

Alarm2

Housing

Sensor

Buzzer & 3-light alarm

Alarm1

Alarm2

Ackn.

Buzzer

LED

Ackn.

Buzzer

LED

Ackn.

Buzzer

LED

Alarm2

Alarm1

* Time delay set in conﬁg.

Alarm2

Alarm1

Time delay*

If ackn. button

pressed after

Alarm

If ackn. button

pressed during

Alarm2

If ackn. button

not pressed

Blinking (2 sec.)

Fast blinking (1 sec.)

Very fast blinking (0.1 sec.)

Buzzer on

Static, Power LED

Gas detection unit, Basic

Alarm scheme

Figure 5: Alarm scheme

Buzzer & light

Gas detection unit, Basic

Service and maintenance

The Basic/Basic+ 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 an on-site 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.

Type

Model

Refrigerant

Sensor

ppm range

Alarm ppm

Temp. Range

[°C]

Temp. Range

[°F]

Code number

GDA

Basic

Ammonia

Electrochemical

0 – 100

25/35

-40 to +50

-40 to +122

148H6000

Basic+

(1)

Ammonia

Electrochemical

0 – 100

25/35

-40 to +50

-40 to +122

148H6001

Basic

Ammonia

Electrochemical

0 – 300

25/150

-40 to +50

-40 to +122

148H6008

Basic+

(1)

Ammonia

Electrochemical

0 – 300

25/150

-40 to +50

-40 to +122

148H6009

Basic

Ammonia

Electrochemical

0 – 1000

500/900

-40 to +50

-40 to +122

148H6014

Basic+

(1)

Ammonia

Electrochemical

0 – 1000

500/900

-40 to +50

-40 to +122

148H6015

Basic

Ammonia

Semiconductor

0 – 1000

500/900

-40 to +50

-40 to +122

148H6023

Basic+

(1)

Ammonia

Semiconductor

0 – 1000

500/900

-40 to +50

-40 to +122

148H6024

Basic

Ammonia

Semiconductor

0 – 10000

5000/9000

-40 to +50

-40 to +122

148H6071

Basic Remote

Ammonia

Semiconductor

0 – 10000

5000/9000

-40 to +50

-40 to +122

148H6073

Basic

Ammonia

Pellistor

0 – 140000

30000

-40 to +50

-40 to +122

148H6070

GDHF

Basic + AC ( 100 – 240V AC)

R404a, R507a,

R32, R125, R407c, R434a, R488a,R410a,

R452b,R143b

Semiconductor

0 – 2000

500/900

-30 to +50

-22 to +122

148H6056

Basic + AC ( 100 – 240V AC)

R134a, R407a, R416a, R417a, R422a, R422d, R427a, R437a, R438a, R449a,

R407f, R450a

Semiconductor

0 – 2000

500/900

-30 to +50

-22 to +122

148H6057

Basic + AC ( 100 – 240V AC)

R1234yf, R452a,

R513a, R454c, R455a, R454b,

R1234ze

Semiconductor

0 – 2000

500/900

-30 to +50

-22 to +122

148H6058

GDHF

Basic

R404a, R507a,

R32, R125, R407c, R434a, R488a, R410a

Semiconductor

0 – 2000

500/900

-40 to +50

-40 to 122

148H6045

Basic+

(1)

R404a, R507a,

R32, R125, R407c, R434a, R488a, R410a

Semiconductor

0 – 2000

500/900

-40 to +50

-40 to 122

148H6046

GDC

Basic

Infrared

0 – 20000

5000/9000

-40 to +50

-40 to 122

148H6072

Description

Code number

Replacement sensor - Ammonia EC 100

148H6200

Replacement sensor - Ammonia EC 300

148H6201

Replacement sensor - Ammonia EC 1000

148H6202

Replacement sensor - Ammonia SC 1000

148H6203

Replacement sensor - HFC R404A, R507 SC 2000

148H6210

Replacement sensor - HFC R1234yf SC 2000

148H6239

Replacement sensor - HFC R134a SC 2000

148H6211

Controller unit

148H6231

Controller solution (controller + enclosure)

148H6221

Controller expansion module

148H6222

Service tool

148H6224

PC tool

148H6235

Calibration adapter

148H6232

Buzzer & light - acoustic buzzer and optic led

148H6225

Air duct set

148H6236

Seal cap

148H6227

Gas detection unit, Basic

Ordering

Table 9: Ordering

(1)

incl buzzer & Light

Spare parts and accessories

Table 10: Spare parts and accessories

Description

Code number

Splash guard

148H6226

Gateway for controller

148H6228

Remote kit

148H6238

Gas detection unit, Basic

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.

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.).

Buzzer & light - acoustic buzzer and optic led

Can be installed in Basic or Premium units providing a local alarm.

Air duct set

The air duct set is specially designed to capture the airow in air ducts. It can be connected to the standard sensor heads, except from Heavy Duty gas detection units.

Seal cap

Airtight seal cap to protect the sensor head against premature exposure during installation. The seal cap is mounted on new sensors (complete units and replacement sensors) but is also available as an accessory.

Splash guard

To protect the sensor head against water exposure during wash-down cleaning and rinsing operations.

Gateway for controller

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

Remote kit

Enabling installation of a sensor head in plastic housing 5m (16.4 ft.) from the unit. This means that the gas detection unit can be placed outside the room where the sensor is placed to detect hazardous gases, allowing reading of and interfacing with the unit without entering the dedicated space. Basic and Premium gas detection units.

Type

File name

Document type

Document topic

Approval authority

GDA

148R6115.AA

EU Declaration

EMCD/LVD

Danfoss

EMC directives 2014/30/EU

Conformity to EN 50271, EN 61010-1

ETL listed to UL 61010-1 and CSA C22.2 No.61010-1

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

Gas detection unit, Basic

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 11: Valid Approvals

Table 12: Compliance

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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.

Download the Spare Parts app for free at www.danfoss.com/en/service-and-support/downloads.

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 Basic, Basic Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual