DwyerOmega Digihelic DHC-002 User Manual

Differential pressure controller

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USER'S GUIDE

Series DHC Digihelic®

Differential Pressure Controller

dwyer-inst.com | info@dwyermail.com

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Bulletin P-DHC

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Page 1 USER’S GUIDE Series DHC Digihelic® Differential Pressure Controller dwyer-inst.com | info@dwyermail.com For latest product manuals: dwyer-inst.com/en/instruction-manuals Bulletin P-DHC...
Page 2 CONTACT Dwyer Instruments, LLC dwyer-inst.com/en/contact-us Toll-Free: 1-800-872-9141 (USA only) Telephone: (219) 879-8000 Fax: (219) 872-9057 Email: info@dwyermail.com The information contained in this document is believed to be correct, but Dwyer accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.
Page 3: Table Of Contents
Table of Contents Introduction ..................................6 Specifications ..................................6 Installation ................................... 7 Mounting ....................................7 Wiring ....................................10 Operation ..................................... 11 Main Menus and Submenus ............................12 Auto Serial Configuration .............................. 19 BACnet Communication Protocol Services ........................ 19 BACnet Communication Protocol Objects Overview ....................20 11.
Page 4: Introduction
Introduction The Series DHC Digihelic® Differential Pressure Controller is a 3-in-1 instrument possessing a digital display gage, control relay switches, and a transmitter with both current and voltage outputs. Combining these 3 features allows the reduction of several instruments with one product, saving inventory, installation time, and cost. The Series DHC Digihelic®...
Page 5: Installation
Installation Select a clean, dry location that is free from shock and vibration where temperature limits will not be exceeded. Distance from the transmitter to the receiver is limited only by total loop resistance. See WIRING section. The tubing feeding pressure to the instrument can be practically any length required, but longer lengths will slightly increase response time.
Page 6: Surface Mounting
4.2. Surface Mounting Step 1: Use the drill template (Figure 4 on the next page) on the front of the desired mounting surface. Provide three 4.76 mm (3/16 in) diameter holes in panel on a 104.78 mm (4 1/8 in) diameter bolt circle. Cut the opening for the terminal block as shown in Figures 2 and 4.
Page 7 Figure 4: Dimensional line drawing Mounting...
Page 8: Wiring
Wiring The DHC uses a standard 15 pin male high density D-Sub connector available from most electronic distributors. A pre-wired 45.72 mm (18 in) cable is included with each unit. See below table for cable color wiring information. 15 Pin Function Connector Cable Color...
Page 9: Operation
Operation KEY FUNCTIONS Home Position Main Menu Edit Setting Sub Menu Function Edit Value Function Keys Function Function Function Allows access to SP/AL the Set Point and Alarm menus Allows access to Return to home Return to previous Cancel edit, return Cancel edit, return MENU the menus...
Page 10 6.2. Set Point Adjustment Adjusting the DHC set points is quick and simple. Instead of setting a set point and deadband, simply adjust “SP1T” or “SP2T” for the desired trigger point, and then adjust “SP1R” or “SP2R” for the desired reset point. The associated LED will light up green when the set point is triggered.
Page 11: Main Menus And Submenus
• VOH - Velocity Output High • AREA - Duct Area • FOL - Flow Output Low • FOH - Flow Output High • uoUt - Voltage Output Range If the instrument mode is set to Pressure, the oPEr MENU will include the POL and POH SUB MENUs. If the instrument mode is set to Velocity, the oPEr MENU will include the KFAC, VOL and VOH SUB MENUs.
Page 12 7.6. Unit (Velocity) SUB MENU For velocity measurement, the following units are available: • SFPM - Standard feet per minute • M/S - Meters per second Available Velocity Ranges Input Range in w.c. SCFM Range M/S Range ±0.25 ±20.02 x1K ±101.7 ±0.5 ±28.31 x1K...
Page 13 either ft2 or m2 depending on the flow unit selected. The adjustment range is 0.13-25.0 ft2 (0.012-2.323 m2). The factory setting is 1 ft2 (0.093 m2). 7.12. FOL and FOH SUB MENUs Flow output low and flow output high are used to scale the current and voltage output. Set FOL to the desired display reading for 4 mA output.
Page 14 7.23. rLy (Relay) MAIN MENU The rLy menu includes options to configure which source will trigger a relay and what happens when a relay is triggered. The SUB MENUS are: • rLy1 - Relay 1 Source • rLy2 - Relay 2 Source •...
Page 15 the RESET key while in the VALY SUB MENU. 7.33. PdiS (Process Display) SUB MENU • STD - Display reads pressure, velocity, or flow values • PCT - Display reads % of full-scale value When the display is reading percent, PCT is displayed in the upper right of the display. 7.34.
Page 16 7.40. StP (Serial Stop Bits) SUB MENU • 1 - One stop bit • 2 - Two stop bits SUB MENU not available if protocol is NONE or BAC or if serial baud rate is AUTO. 7.41. CAL (Calibration) Main Menu The CAL menu contains SUB MENUS to perform field calibration, reset settings, and display information.
Page 17: Auto Serial Configuration
setting is set to ON. 7.49. ALLO (Alarm Low Limit) SUB MENU This SUB MENU sets the alarm low limit value. If the process value is less than the alarm low limit value, the low alarm is considered active. 7.50. ALHI (Alarm High Limit) SUB MENU This SUB MENU sets the alarm high limit value.
Page 18: Bacnet Communication Protocol Objects Overview
BACnet Communication Protocol Objects Overview The instrument supports the following objects: SUPPORTED BACNET COMMUNICATION PROTOCOL OBJECTS Dynamically Dynamically Object Object Type Creatable Deletable Identifier Object Name Device 607xxx DHC 607xxx Analog Input Pressure Analog Value Velocity Analog Value Flow Analog Value Peak Analog Value Valley...
Page 19 11. BACnet Communication Protocol Objects 11.1. Device Object Property Default Value Property Data Type Access Object Identifier 607127 BACnet Object Identifier Read/Write Object Name “DHC 607127” Character String(32) Read/Write Object Type Device BACnet Object Type Read System Status Operational BACnet Device Status Read Vendor Name “Dwyer...
Page 20 • kilopascals(54) • ounce-force-per-square-inch*(531) *Non-standard unit 11.3. Analog Value - Velocity This object represents the current velocity reading in the selected unit measure. The velocity unit is set via the units property and is independent of the display unit. Property Default Value Property Data Type Access...
Page 21: Bacnet Communication Protocol Objects
11.6. Analog Value - Valley This object represents the minimum process value measured since the last power cycle or reset. The unit of measure matches the selected process value. This value cannot be reset remotely. Property Default Value Property Data Type Access Object Identifier BACnet Object Identifier...
Page 22 11.9. Multi-State Value - Process Mode This object represents the process or operating mode of the instrument. This setting determines which process variable is output on the analog channels and measurement unit of the peak, valley, set points and alarm limits.
Page 23 11.12. Multi-State Value - Voltage Output Range This object represents the nominal range of the voltage output channel. Property Default Value Property Data Type Access Object Identifier MSV2 BACnet Object Identifier Read Object Name “Voltage Output Range” Character String Read Object Type Multi-State Value BACnet Object Type...
Page 24 11.15. Analog Value - Set Point 1 Reset Value This object represents the process value at which set point 1 transitions from active to inactive. The unit of this value matches the unit of the selected process mode. Property Default Value Property Data Type Access Object Identifier...
Page 25 11.19. Analog Value - Set Point 2 Reset Value This object represents the process value at which set point 2 transitions from active to inactive. The unit of this value matches the unit of the selected process mode. Property Default Value Property Data Type Access Object Identifier...
Page 26 11.23. Binary Value - Alarm High Limit Status This object represents the current status of the alarm high limit. When active, the ALHI LED on the instrument face is illuminated. Property Default Value Property Data Type Access Object Identifier BACnet Object Identifier Read Object Name “Alarm High Limit Status”...
Page 27 11.26. Binary Value - Alarm Low Limit Status This object represents the current status of the alarm low limit. When active, the ALLO LED on the instrument face is illuminated. Property Default Value Property Data Type Access Object Identifier BACnet Object Identifier Read Object Name “Alarm Low Limit Status”...
Page 28 11.29. Positive Integer Value - Alarm Delay This object represents the amount of time an alarm condition must be continuously met before the alarm status becomes active. Property Default Value Property Data Type Access Object Identifier PIV1 BACnet Object Identifier Read Object Name “Alarm Delay”...
Page 29 11.32. Multi-State Value - Relay 2 Source This object represents the relay 2 source setting. The selected source determines when the relay is active. If the source is active, the relay will be active. Property Default Value Property Data Type Access Object Identifier MSV5...
Page 30 11.35. Multi-State Value - External Input Type This object represents the type of contact/switch connected to the external input. Property Default Value Property Data Type Access Object Identifier MSV7 BACnet Object Read Object Name “External Input Type” Identifier Read Object Type Multi-State Value Character String Read...
Page 31: Modbus® Communications Protocol Overview
11.38. Positive Integer Value - Damping Time This object represents the time, in seconds, for the process measurement to reach 99.8% of the current input value. A value of 0 disables the damping feature. Property Default Value Property Data Type Access Object Identifier PIV3...
Page 32: Holding Registers
Error Flags Display Errors Bit Position Description EADR Invalid Address ouEr Over Range Undr Under Range ER 1 Sensor Range Exceeded ER 2 Sensor Error ER 3 No Sensor ER 4 User Settings Invalid ER 5 Factory Settings Invalid ER 6 External Memory Failure ER 7 Internal Memory Failure...
Page 33: Maintenance
Pressure/Velocity/Flow Units: The unit selected is independent of the display unit. Alarm High/Low Limit Status: The alarm status can be reset to inactive by writing inactive to the status register. This is allowed only if Manual Alarm Reset is Enabled and the process value no longer satisfies the alarm condition.
Page 34 15. Menu Maps POWER ON (RESET) MENU LEGEND PRESS MENU BUTTON PRESS ENTER BUTTON DISPLAY ALL PRESS AND HOLD ENTER BUTTON SEGMENTS PRESS SPAL BUTTON PRESS UP BUTTON PRESS DOWN BUTTON PRESS RST BUTTON FIRMWARE VERSION MODEL NUMBER MODEL PRESSURE RANGE HOME SCREEN MODE = PRESSURE...
Page 35 MAIN MENU CONFIGURE PIN (0000 = DISABLED) DISCARD SAVE CHANGE DIGIT NEXT DIGIT (MOVE CARON) OPERATION MENU SET POINT MENU ALARM MENU HOME SCREEN RELAY MENU EXTERNAL INPUT MENU DISPLAY MENU CONNECTION MENU CALIBRATION MENU Menu Maps...
Page 36 OPERATION MENU OPERATION MODE MEASUREMENT UNIT MAIN MENU OPERATION MENU (CONTINUED) Series DHC User's Manual...
Page 37: Menu Maps
OPERATION MENU (CONTINUED) DISCARD PRESSURE SAVE OUTPUT LOW AVAILABLE WHEN CHANGE DIGIT MODE = PRESSURE NEXT DIGIT (MOVE CARON) PRESSURE OUTPUT HIGH AVAILABLE WHEN VELOCITY MODE = VELOCITY K-FACTOR OR FLOW DISCARD VELOCITY SAVE OUTPUT LOW AVAILABLE WHEN CHANGE DIGIT MODE = VELOCITY NEXT DIGIT (MOVE CARON) VELOCITY...
Page 38 OPERATION MENU (CONTINUED) VOLTAGE OUTPUT RANGE Series DHC User's Manual...
Page 39 SET POINT MENU SET POINT 1 ENABLE SET POINT 2 ENABLE MAIN MENU Menu Maps...
Page 40 ALARM MENU ALARM HIGH LIMIT ENABLE ALARM LOW LIMIT ENABLE MAIN MENU ALARM RESET TYPE ALARM INHIBIT ENABLE DISCARD ALARM DELAY SAVE CHANGE DIGIT NEXT DIGIT (MOVE CARON) Series DHC User's Manual...
Page 41 RELAY MENU RELAY 1 SOURCE MAIN MENU RELAY 2 SOURCE RELAY MENU (CONTINUED) Menu Maps...
Page 42 RELAY MENU (CONTINUED) RELAY 1 ACTION IF RELAY 1 SOURCE = SP1, SP2, OR EXT RELAY 1 ACTION IF RELAY 1 SOURCE = AL, ALHI, OR ALLO RELAY 2 ACTION IF RELAY 2 SOURCE = SP1, SP2, OR EXT RELAY 2 ACTION IF RELAY 2 SOURCE = AL, ALHI, OR ALLO Series DHC User's Manual...
Page 43 EXTERNAL INPUT MENU EXTERNAL INPUT ENABLE EXTERNAL INPUT TYPE MAIN MENU DISCARD EXTERNAL INPUT SAVE DELAY CHANGE DIGIT NEXT DIGIT (MOVE CARON) Menu Maps...
Page 44 ALARM MENU PEAK PROCESS RESET PEAK VALUE VALUE VALLEY PROCESS RESET VALLEY VALUE VALUE PROCESS DISPLAY MAIN MENU DISCARD DAMPING TIME SAVE CHANGE DIGIT NEXT DIGIT (MOVE CARON) Series DHC User's Manual...
Page 45 CONNECTION MENU PROTOCOL SELECTION DISCARD DEVICE SAVE MAIN MENU ADDRESS CHANGE DIGIT NEXT DIGIT (MOVE CARON) SERIAL BAUD RATE CONNECTION MENU (CONTINUED) Menu Maps...
Page 46 OPERATION MENU (CONTINUED) SERIAL PARITY AVAILABLE WHEN PROTOCOL SELECTION = MODBUS SERIAL BAUD RATE ≠ AUTO SERIAL STOP BITS Series DHC User's Manual...
Page 47 CALIBRATION MENU ZERO CALIBRATION 1sec 1sec 1sec 1sec SPAN MAIN MENU CALIBRATION 1sec 1sec 1sec 1sec RESTORE FACTORY SETTINGS DEVICE REBOOTS AFTER 5 SECONDS SERIAL NUMBER DISPLAY (PART 1) SERIAL NUMBER DISPLAY (PART 2) Menu Maps...
Page 48 SPAL MENU DISCARD SET POINT 1 SAVE TRIGGER CHANGE DIGIT AVAILABLE WHEN SET POINT 1 NEXT DIGIT [MOVE CARON] ENABLE = ON DISCARD SET POINT 1 SAVE RESET CHANGE DIGIT NEXT DIGIT [MOVE CARON] DISCARD SET POINT 2 SAVE TRIGGER MAIN MENU CHANGE DIGIT AVAILABLE...

DwyerOmega Digihelic DHC-002 User Manual

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