Bacharach GDA-400 Data sheet

Monitors

Bacharach’s GDA-400 four channel controller is designed to provide simultaneous display and alarm functions for up to four monitors with 4-20 mA inputs. A graphic LCD displays monitored data as gas type and concentration, bar graphs and 30 minute trends. Three adjustable alarm levels are provided per channel. Relay outputs allow control of audible and visual alarms, strobes, horns and other alarm events.

Easy Conguration and Simple Calibration

The Bacharach GDA-400 is equipped with a fault and three alarm levels per channel with features such as ON/OFF delays, latching relays and alarm acknowledgement. A dedicated horn driver circuit for a local audible alarm is also standard. Two standard 5-amp alarm relays are conﬁgurable via the “alarm voting” menu to trigger relays based upon various alarm combinations. If more relays are required an optional relay board can be added.

The GDA-400 is easy to conﬁgure and offers ﬂexibility to meet the most demanding applications. A realtime clock and calendar are standard and non-volatile memory retains all conﬁguration data indeﬁnitely. Options such as 4-20 mA outputs, discrete relays for each alarm are easily added. RS-485 (Modbus RTU) or Ethernet (Modbus controllers. The GDA-400 also has complete calibration functionality for each input channel. This unique feature allows maintenance and service personnel to use the controller to calibrate the Bacharach GDX-150 simple sensor.

TCP) ports are also available for sending data to PC’s, PLC’s, DCS’s, or other

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GDA-400 Features & Beneﬁts:

 •Continuousmonitoringand

control of up to four gas transmitters

 •GraphicLCDforrealtime

monitoring and 30-minute trends

 •Completecalibration

functionality for each input channel

 •Non-volatilememoryretains

all conﬁguration data

 •Optionaldiscretechannel

alarm relays

GDA-400 Specifications

Inputs: Available Inputs Include 4-20 mA with Precision 100 ohm

Dimensions: 8.0” x 10.0” x 6.25”

Housing Options: NEMA 4X / IP66 Wall Mount Approved for Div 2

User Interface: 128 x 64 Pixel Graphic LCD with Backlight Displays Bar

Common Alarm Relays: 2 Standard

Discrete Alarm Relays: 6 optional

Serial Ports (Optional): Slave RS-485 Port Equipped with Tx / Rx LED’s

Analog Outputs (Optional): 10 bit 4-20 mA Output. Max Load 800 ohms with

Ambient Temperature Range: 13

Power: 100-240 VAC / 24 VDC are Standard Primary Power

Approvals: CSA/UL Div 2 (Pending)

NEMA 7 = Div 1, Gr. B; EN55011 & EN61000;

Terminating Resistor (0-2 Volt Inputs may be Accepted by Removing the Socketed Terminating Resistor) and Bridge Sensor Inputs with Adjustable Sensor Excitation and Balance settings

(20.32 cm x 25.4 cm x 15.875 cm)

NEMA 7 Explosion-proof Wall Mount Div 1 (Available Upon Request)

Graphs and Engineering Units. 6 Discrete LED’s Indicate Alarm Status, CAL MODE, Keypad

5-amp 30 VDC or 250 VAC Resistive Form C

Protocol = Modbus

Nominal 24 VDC Power Supply

to 122o F (-25o to +50o C)

Supplies

CE Mark

RTU

GDA-400 Ordering Information

5700-0400 GDA-400 4 Channel Base Controller, w/Display, NEMA 4X Enclosure

All controllers are ordered based on purchasers required options. Each option is a separate part number and can be added to the base controller at any time. When a base controller is ordered with additional accessory options, these options are installed during the time of manufacturing.

GDA-400 Options

5700-0014 GDA-400 4-20 mA Input Card 5700-0020 GDA-400 Bridge Sensor Input Card 5700-0015 GDA-400 Alarm Relay Output Card 5700-0019 GDA-400 4-20 mA Output Card 5700-0017 GDA-400 RS-232 / RS-485 Modbus® RTU Output Card 5700-0029 50 Watt Power Supply (Needed if 24 VDC Required Exceeds 10 Watts)

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Made in the USa

Bacharach is a registered trademark of Bacharach, Inc.

September 2010 - REV. 0 Printed in U.S.A.

Bacharach GDA-400 Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual