Model GA-200

DISPLAYS, ALARMS & BRIDGES

GA Series

GA-200

Display, Alarm and Analog to RS-485 BACnet/Modbus Bridge

The GA-200 is a multi-function device. It can be used to display the output of any analog or BACnet MS/TP sensor. The GA-200 can act as network bridge and convert an analog output sensor to a BACnet MS/TP or Modbus RTU sensor. The device has a built-in high, low or high/low setpoint alarm that can alarm on a physical analog input or BACnet MS/TP AI. The GA-200 can also display the physical analog input or BACnet MS/TP AI on a 16-character LCD with user defined units of measure.

  • Display the output of any analog sensor
  • Read a BACnet MS/TP AI object in lieu of the physical analog input without a BAS network
  • Analog input range 0-10 VDC or 4-20 mA
  • 16-character alpha-numeric LCD
  • Define and display user defined input with custom units of measure
  • Buit-in high, low or high/low setpoint alarm with user defined tolerance and delay
  • Automatic or manual alarm reset
  • Active alarm is displayed on LCD, illuminates a red LED and closes a N.O. dry contact relay
  • Convert the analog input to a BACnet MS/TP AI, AO or AV object or dual register Modbus value
  • Make any analog sensor a network sensor
  • Simple pushbutton interface does not require any proprietary hardware or software
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Description

FEATURES

The GA-200 is a multi-function device. It can be used to display the output of any analog or BACnet MS/TP sensor. The GA-200 can act as network bridge and convert an analog output sensor to a BACnet MS/TP or Modbus RTU sensor. The device has a built-in high, low or high/ low setpoint alarm that can alarm on a physical analog input or BACnet MS/TP AI. The GA-200 can also display the physical analog input or BACnet MS/TP AI on a 16-character LCD with user defined units of measure

OVERVIEW

FUNCTIONALITY

Display: Display the measured analog input, AI1 (or BACnet MS/TP AI1), on the LCD with user defined units of measure

Alarm: Low and/or high user defined setpoint alarm on AI1 with user defined % of setpoint or fixed value tolerance

Delay: User defined

Reset Method: Manual or automatic

Visual Indication: Yes, LCD and red indicating LED

Network Indication: Yes

Contact Closure Relay Assignment: Yes, R1

Network Bridge Capability: Convert AI1 to a BACnet MS/TP AI, AV or AO object or dual register Modbus RTU value (high byte/low byte user definable)


USER INTERFACE

Display: 16-character alpha-numeric LCD

Navigation: 4-button interface


ANALOG INPUT

AI1

Type: Analog Input (AI1)

Assignment: User defined analog signal

Configurable Ranges: 0-10V or 4-20mA (4-wire)


CONTACT CLOSURE RELAY (AI1) ALARM

R1

Type: Dry contact w/ onboard jumper to drive a remote LED

Assignment: Active alarm

Status: Normally Open (N.O.)

Rating: 30 VDC or 24 VAC @ 3 amp. max


NETWORK CONNECTION

N1

Type: Non-isolated MS/TP BACnet master (provide an RS-485 network isolator if isolation is required) or Modbus RTU connection

Protocol: Field selectable

B.A.S. Object Read/Write Access: Yes

Device Load: 1/8 load

Supported Baud Rates: 9.6, 19.2, 38.4 and 76.8 kbaud


ENVIRONMENTAL LIMITS, POWER REQUIREMENTS & DIMENSIONS

Temperature: -20 to 120 ⁰F [-28.9 to 48.9 ⁰C]

Humidity: 5 to 95%

Power Requirement: 24 VAC (22.8 to 26.4 under load) @2.5V-A

Dimensions: 3.57H x 6.00W x 1.58D in. [90.7 x 152.4 x 40.1 mm]