Bacharach MGS SERIES Spezifikationen Seite 1

Infrared Gas Detector Installation and Operation Manual Instruction 6490-9000 February 2014 Revision 1 Product Leadership • Training •

MGS-250 Manual 10 6490-9000 Revision 1 1.2. Detection Options 1.2.1. Broadband vs. Gas Specific The MGS-250 NDIR refrigerant gas detectors are av

MGS-250 Manual 6490-9000 Revision 1 11 Figure 2. Broadband Gas Groups 1-3 1.2.3. Detecting Specific Gases Each gas-specific gas detector (PNs

MGS-250 Manual 12 6490-9000 Revision 1 Figure 3. Gas Specific MGS-250 Gas Detectors

MGS-250 Manual 6490-9000 Revision 1 13 Table 2: Gas Specific Detector Measurement Performance Part Number Refrigerant1 Accuracy 6401-0501 R22

MGS-250 Manual 14 6490-9000 Revision 1 As Shipped Part number 6401-0501 (R22) is factory calibrated to R22 and has an as-shipped R22 response accu

MGS-250 Manual 6490-9000 Revision 1 15 1.3. Remote Controller Options The MGS can connect to any controller through the standard analog output (vo

MGS-250 Manual 16 6490-9000 Revision 1 1.5. Specifications Table 4: Technical Specifications Specification Description Power Supply 24 VDC, 24 V

MGS-250 Manual 6490-9000 Revision 1 17 Section 2. Mounting the Gas Detector 2.1. Warnings and Prerequisites WARNING: Explosion hazard! Do not m

MGS-250 Manual 18 6490-9000 Revision 1 2.2.2. Machinery Rooms There is no absolute rule in determining the number of gas detectors and their locat

MGS-250 Manual 6490-9000 Revision 1 19 preferred), or on the ceiling, not directly in front of an evaporator, nor in any direct airflow. In large r

MGS-250 Manual 2 6490-9000 Revision 1 WARRANTY POLICY BACHARACH, INC. WARRANTS THIS GAS DETECTOR TO BE FREE FROM DEFECTS IN MATERIALS AND WORKMANSH

MGS-250 Manual 20 6490-9000 Revision 1 Step Mounting Procedure 3 Wall Mount Attach the MGS-250 base to the mounting surface using two #6 screws (p

MGS-250 Manual 6490-9000 Revision 1 21 Figure 6. Front and Back Views of MGS-250 Base

MGS-250 Manual 22 6490-9000 Revision 1 Section 3. Wiring and Configuration 3.1. Overview Prior to wiring and configuring the MGS-250, assure the

MGS-250 Manual 6490-9000 Revision 1 23 3.2. Wiring Supply Power (24VAC or 24VDC) WARNING: Incorrect wiring may permanently damage the gas detec

MGS-250 Manual 24 6490-9000 Revision 1 WARNING: The MGS-250 must be powered by either: • a suitable UL 60950/CSA certified power supply that is

MGS-250 Manual 6490-9000 Revision 1 25 3.3. Wiring Alarm Output (Analog Signal) The MGS-250 provides an analog output signal that is proportional

MGS-250 Manual 26 6490-9000 Revision 1 3.4. Wiring the Digital Alarm Output Relay An alarm setpoint may be programmed from the front panel of the

MGS-250 Manual 6490-9000 Revision 1 27 3.5. Modbus Network Configuration If your application includes a Modbus network, make network connections

MGS-250 Manual 28 6490-9000 Revision 1 IMPORTANT: Connect the RS-485 cable shield to pin 9 (board ground). NOTE: Selection of the Modbus Addre

MGS-250 Manual 6490-9000 Revision 1 29 Figure 13. Setting Network Termination Resistors 3.6. Conclusion Once the base is mounted and all wiring

MGS-250 Manual 6490-9000 Revision 1 3 POLICY OF PERFORMING ALL NEEDED REPAIRS TO RESTORE THE GAS DETECTOR TO FULL OPERATING CONDITION. PRIOR TO SH

MGS-250 Manual 30 6490-9000 Revision 1 Section 4. Operation and Stabilization 4.1. Power Up and Warmup On powering up, the MGS-250 will sense fo

MGS-250 Manual 6490-9000 Revision 1 31 4.4. Alarms The following occurs during an alarm condition. Table 9: MGS-250 Behavior during Alarm Conditi

MGS-250 Manual 32 6490-9000 Revision 1 Table 10: MGS-250 Behavior during a Non-Critical Fault Item Behavior During Non-Critical Fault State Green

MGS-250 Manual 6490-9000 Revision 1 33 Section 5. Configure the Gas Detector 5.1. User Interface Overview The gas detector is configured throug

MGS-250 Manual 34 6490-9000 Revision 1 5.2. Setting Parameters 5.2.1. Overview Press and hold the information button () for 5 seconds to activat

MGS-250 Manual 6490-9000 Revision 1 35 Parameter Description Alarm ON Delays Sets the ON delay time (0-15 minutes) for the alarm output signals

MGS-250 Manual 36 6490-9000 Revision 1 Parameter Description Display Mode The display can be turned on by using this parameter. When set to ON t

MGS-250 Manual 6490-9000 Revision 1 37 Parameter Description Buzzer Mute Time Sets a time (0-59 minutes) during which the active buzzer remains m

MGS-250 Manual 38 6490-9000 Revision 1 Parameter Description Analog Output Scaling Allows the user to select the full-scale PPM value that repre

MGS-250 Manual 6490-9000 Revision 1 39 Figure 15. Analog Output Scaling Options

MGS-250 Manual 4 6490-9000 Revision 1

MGS-250 Manual 40 6490-9000 Revision 1 Parameter Description Gas Test Mode Places the gas detector in gas test mode. 00 Disabled (default) 01 E

MGS-250 Manual 6490-9000 Revision 1 41 Parameter Description Diagnostics Menu Parameter 18 provides access to the self diagnostic information. T

MGS-250 Manual 42 6490-9000 Revision 1 Parameter Description Response Filtering This parameter is used to turn filtered output ON (01) or OFF (00

MGS-250 Manual 6490-9000 Revision 1 43 Section 6. Functional Tests and Adjustments 6.1. Introduction To comply with the requirements of EN378 and

MGS-250 Manual 44 6490-9000 Revision 1 IMPORTANT: After initial installation, the MGS-250 should be gas tested to ensure proper operation. IMPO

MGS-250 Manual 6490-9000 Revision 1 45 the actual gas detector response level (via parameter P.-17) to ensure that the gas detector activates

MGS-250 Manual 46 6490-9000 Revision 1 Step Bump Testing Using Calibration Gas Cylinders 1 Remove the Splash Shield accessory if one is used. 2 C

MGS-250 Manual 6490-9000 Revision 1 47 NOTE: For improved accuracy and response, the gas detector should be protected from excess drafts while pe

MGS-250 Manual 48 6490-9000 Revision 1 Step Adjustment Using Calibration Gas Cylinders 7 If no further changes to the other parameters are require

MGS-250 Manual 6490-9000 Revision 1 49 Section 7. Modbus Communications 7.1. Introduction The MGS-250 gas detector can be configured to commun

MGS-250 Manual 6490-9000 Revision 1 5 Table of Contents SECTION 1. INTRODUCTION ...

MGS-250 Manual 50 6490-9000 Revision 1 7.3. Analog Input Registers Analog input registers are read only and use function code 04. Table 14: Analog

MGS-250 Manual 6490-9000 Revision 1 51 7.4. Analog Output Registers Analog output registers are readable (using function code 03) and writable (us

MGS-250 Manual 52 6490-9000 Revision 1 7.5. Input Status Flags Input Status Flags are readable (using function code 02). Table 16: Input Status Fl

MGS-250 Manual 6490-9000 Revision 1 53 Section 8. Troubleshooting 8.1. Fault Codes To comply with the requirements of EN378 and the European F-GA

MGS-250 Manual 54 6490-9000 Revision 1 Table 18: Fault Codes Description Fault Code Hex Code Possible Causes Gas Detector Temperature Fault 0x00

MGS-250 Manual 6490-9000 Revision 1 55 Description Fault Code Hex Code Possible Causes Critical Faults Critical fault. Cycle power to the sens

MGS-250 Manual 56 6490-9000 Revision 1 Attribute Description Reserved : Displays the sensor temperature in °C. Displays the sensor’s approxim

MGS-250 Manual 6490-9000 Revision 1 57 Step Description 1 Access diagnostics menu P.-18. 2 Press and hold both the UP and DOWN buttons for 5 sec

MGS-250 Manual 58 6490-9000 Revision 1 Section 9. Replacement Parts and Accessories The following items are available as replacement parts. NOTE

MGS-250 Manual 6490-9000 Revision 1 59 DECLARATION OF CONFORMITY The manufacturer of the products covered by this declaration: Bacharach, Inc

MGS-250 Manual 6 6490-9000 Revision 1 5.2. Setting Parameters ...

MGS-250 Manual 60 6490-9000 Revision 1 Murco - A Bacharach Company 114a George’s Street LOWER Dun Laoghaire • Co Dublin • IRELAND Phone: +

MGS-250 Manual 6490-9000 Revision 1 7 List of Figures SECTION 1. INTRODUCTION ...

MGS-250 Manual 8 6490-9000 Revision 1 List of Tables SECTION 1. INTRODUCTION ......

MGS-250 Manual 6490-9000 Revision 1 9 Section 1. Introduction 1.1. Overview The MGS-250 NDIR (non-dispersive infrared) is a state-of-the-art fixe