Related Manuals for PEMTECH PT900-8FG
Summary of Contents for PEMTECH PT900-8FG
- Page 1 MODEL PT900-8FG 8 CHANNEL GAS MONITOR & CONTROLLER Operator’s Manual Revision 2.0 March 2001 Pem-Tech, Inc. Houston, Texas U.S.A.
- Page 2 NOTICE PEM-TECH INCORPORATED SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS MADE HEREIN, NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL LIMITED WARRANTY Pem-Tech, Incorporated warrants all the equipment to be free from defects in workmanship and material.
- Page 3 SERVICE POLICY Pem-Tech has service facility at the factory. For all the repairs contact at our toll free number 1-800-379-3894 or visit our website www.pem-tech.com For all repairs call us for a Return Material Authorization number (RMA). Inform us briefly the nature of the problem and obtain shipping address. Properly pack the equipment before shipping.
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Page 4: Table Of Contents
TABLE OF CONTENTS Specifications Specifications for PT900-8FG Rack assembly Specifications for Model PT950-B Control monitor Overview Programmable Relays Figure 1. PT950-B Control module Front Panel diagram Installation and Startup Figure 2. PT900-8FG Enclosure dimension Figure 3. System Overview drawing, User termination, control modules in... -
Page 5: Specifications
SPECIFICATIONS For PT900-8FG Rack Assembly with Power Supply MOUNTING: Wall or Panel Mount ENCLOSURE: NEMA 4X Fiberglass Enclosure with clear window DIMENSIONS: 16” Wide x 20” High x 10”Deep WEIGHT: 38 Lbs. OPERATING -40 °F to +170 °F. TEMPERATURE POWER INPUT:... -
Page 6: Specifications For Model Pt950-B Control Monitor
SPECIFICATIONS For PT950-B Control Module Display Range: 0 to 99 for Toxic and Combustibles 0 to 25.0 % for Oxygen deficiency Others depend on the range of the Sensor. Input Signal: 4-20mA (Optional 1-5 VDC) Analog Output: Linear 4-20mA output. < 1.5mA when remote sensor in malfunction. -
Page 7: Overview
OVERVIEW Pem-Tech model PT950-B is a microprocessor based single channel monitor that utilizes the latest digital design techniques in instrumentation. The monitor uses an 8-bit high speed RISC processor with a highly accurate analog to digital logic. The controller module receives signals from remote gas transmitters, displays the gas concentration, generates 4-20mA analog output for recorders and relay outputs for alarm warning devices. - Page 8 Captive Screw MODEL PT 950 MONITOR Digital Display HIGH Visual Alarm LED indicators HI−HI MALF Pushbutton switch (Alarm Reset & Adjust) NORMAL ALARMS BYPASS Alarm Bypass Switch PEM−TECH, INC. Handle HOUSTON, TEXAS Figure 1. PT950-B Control Module...
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Page 9: Installation And Startup
INSTALLATION AND START UP Model PT950-B Control Module is suitable to mount in any PT900 Series Rack assembly with card guides for main circuit board mounting. On the front panel a captive screw is provided to secure the control module to the rack. - Page 10 Figure 3. User termination – PT900-8FG 8 Each PT950 series control modules in Fiberglass...
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Page 11: Ac Or Dc Power Input
AC or DC Power Input A black terminal block is provided at the lower left corner inside the enclosure. The connections on the terminal block are labeled L N G. Connect the external 117-220 VAC power to this terminal. If the unit is powered by DC, connect 24 VDC supply to the 2 pin green terminal labeled DC power input on the termination board. - Page 12 TERMINATION BOARD PT900−8 TERMINATION BOARD FOR REMOTE SENSOR & TRANSMITTER + (+24VDC) − − ( COMMON / GND ) E (mA OUTPUT) 4−20mA − ANALOG OUTPUT ALARM 1 DEVICE ALARM 2 DEVICE ALARM 3 DEVICE NOTE: EXTERNAL PWR COMPLETE TERMINATION BOARD SOURCE FOR ALARMS IS NOT SHOWN.
- Page 13 JMP−1 JMP−2 JMP−7 AUX RELAY COIL PWR RELAY NOTE: RELAY INSTALL JUMPERS JMP−1 THRU JMP−7 TO TIE ALARM CONTACTS OF EACH CONTROL MODULE TO AUXILIARY RELAY RELAY BOARD RELAY CONNECT ALARM TERMINALS OF CH8 TO AUXILIARY RELAY BOARD AS SHOWN Figure 5.
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Page 14: Startup
Start Up Complete the following procedures for the normal unit operation. 1. Complete the mounting and wiring procedures described in earlier sections. 2. Follow gas sensor & transmitter operation manual for proper wiring of sensors with the monitor. 3. Verify all the wiring connections to be correct and secure. 4. -
Page 15: Normal Operation And Alarms
NORMAL OPERATION AND ALARMS Normal Operation During normal operation each control module will display the current gas concentration on the display. If the sensor reading is below alarm level then all the alarm relays and the visual alarm LED indicators on the front panel should be off. -
Page 16: Alarm Bypass
Alarm Bypass In the Alarm Bypass mode the monitor will not activate the alarm relays if any of the sensor reading exceeds the programmed alarm level. However, the visual alarm LED indicators will be activated. To put the alarms in bypass mode move the ALARM toggle switch on the front panel of the control module to BYPASS position. -
Page 17: Programming Alarm Levels
Programming Alarm Levels 1. Move the toggle switch on the front panel to BYPASS position. 2. Press and hold the pushbutton switch (above the toggle switch) until the Low alarm LED starts flashing. Release the switch. 3. While the LED is flashing the display will show the current alarm level. -
Page 18: Setting Alarms As Latching Or Non-Latching
Setting Alarm as Latching or Non-Latching The alarms can be set as latching or Non-Latching by setting the Dip- Switch located on upper left corner of the control module. See figure 6. The dip-switch is labeled as Relays with arrow indicating the switch selection for latching or non-latching. - Page 19 Figure 6. PT950-B Control Module...
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Page 20: Malfunction Condition
The malfunction also occurs if wires connecting the sensors are broken. The fault relay is always non-latching and has a common alarm contact on the PT900-8FG termination board. The relay however, can be programmed as normally open or normally closed. -
Page 21: Parts List
Parts List Part Number Description C- 592 117/230VAC to 24 VDC power supply for 8 Control modules and sensors S-418 Auxiliary Relay Board assembly C- 720 Blank Cover plates C-587 Replacement card guide C-127 Mini Sensor Fuse PT950-B Series Control Modules 950-B-H2S Model PT950-B Control Module for H2S sensor 950-B-LEL...