Related Manuals for Omega DRST-AC
Summary of Contents for Omega DRST-AC
- Page 1 User’s Guide Shop online at omega.com e-mail: info@omega.com For latest product manuals: www.omegamanual.info DRST-AC Din Rail AC Transmitter...
- Page 2 Fax: (203) 359-7700 e-mail: info@omega.com For Other Locations Visit omega.com/worldwide The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.
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Page 3: Table Of Contents
Table of Contents DRST-AC MV Transmitter Table of Contents Section ................ Page Section 1 Warning ..................5 Section 2 Safety Instructions ................ 6 Section 3 How to demount DRST Series ........... 7 Section 4 Universal AC/DC transmitter ............. 8 Section 4.2 Application ..............8 Section 4.3 Technical characteristics .......... - Page 4 Assessment that are both efficient and cost-effective. Our comprehensive range of analog and digital intrinsically safe isolation barriers offers multifunctional inputs and outputs, making Omega an easy-to- implement site standard. Our backplanes further simplify large installations and provide seamless integration to standard DCS systems.
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Page 5: Section 1 Warning
HAZARD OUS VOLTAGE Repair of the device and replacement of circuit breakers must be done by Omega A/S only. WARNING Do not open the front plate of the device as this will cause damage to the connector for the display / programming front DRSL-DISPLAY. -
Page 6: Section 2 Safety Instructions
When disconnected, the device may be cleaned with a cloth moistened with distilled water. Liability To the extent the instructions in this manual are not strictly observed, the custom er cannot advance a demand against Omega A/S that would otherwise exist according to the concluded sales agreement. -
Page 7: Section 3 How To Demount Drst Series
The device is detached from the DIN rail by moving the bottom lock down. When front LED flashes red or DRSL-DISPLAY display shows AO.ER The DRST-AC is designed with a high safety level. Therefore, the device continuously measures the output current. If “S4-20” is selected during configuration, and output current drops to 0 mA, the DRSL-DISPLAY display will indicate “AO.ER”... -
Page 8: Section 4 Universal Ac/Dc Transmitter
• The 0...300 VAC range allows accurate supply voltage monitoring. • The DRST-AC measures standard input ranges, and can be freely configured to customer-defined input range. • Converts narrow AC current / voltage inputs to wide bipolar or unipolar outputs, e.g. 0…1 VAC input = ±10 volt or 4...20 mA output with a minimum span of 0.5 AAC or 0.5 VAC. -
Page 9: Section 5 Signals/Connection
Signals/Connection Section 5.1 - signals: Current Voltage Section 5.2 - Output signals: + V supply Current & voltage 2-wire 10 V 10 V (±) Section 5.3 - Power connection: 21.6...253 VAC 19.2...300 VDC... -
Page 10: Section 6 Drsl-Display/Programming Front
Application • Communications interface for modification of operational parameters in DRST-AC. • Can be moved from one DRST-AC device to another and download the configuration of the first unit to subsequent units. • When mounted in the process, the display shows process values and device status. -
Page 11: Section 7 Order
Order Section 7 - Order DRST-AC = Universal AC/DC transmitter Accessories DRSL-DISPLAY = Display/programming front DRST-CM = Communication enabler Electrical specifications Environmental conditions: Operating temperature......-20 to 60°C Storage temperature . - Page 12 Order Accuracy, the greater of general and basic values: General values Input type Absolute accuracy Temperature coefficient ≤ ±0.3% of span* ≤ ±0.01% of span* / °C Basic values Input type Basic accuracy Temperature coefficient Current 1.5 mA 50 µA/ °C Voltage 1.5 mVAC 50 µVAC /°C...
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Page 13: Section 7.1 Specifications
Order Input limit low/high, error indication levels: UP ........See table on page 15 DOWN. -
Page 14: Section 8 Configurable Input Error Indication & Input Limits
Configurable input error indication and input limits Section 8 - Configurable input error indication and input limits Configurable input error detection To increase system safety and integrity, users can program a high and low input error detection level. Input signals outside the selected error indication levels will cause the output of the device to go to the programmed error state. - Page 15 Configurable input error indication and input limits Input limit check Input limit check Low and / or High enabled disabled Output Output Output Output Output Output Output Output Output error error error error span limit low limit high limit low limit high indication, indication,...
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Page 16: Section 9 Drsl-Display Display Readout
Cause Check measurement of analog output AO.ER No load on the current output (only S4...20 mA)* Communications test between NO.CO Connection error DRSL-DISPLAY/DRST-CM and DRST-AC Configuration error CO.ER Default configuration is loaded Configuration error CO.ER Invalid configuration** Check that saved configuration in TY.ER... -
Page 17: Section 10 Connections
Connections Section10.1 - Connections Supply Inputs: Current Voltage Outputs: Current 2-wire transmitter Voltage, 1 V Voltage, 10 V (±) (±) (±) -
Page 18: Section 11 Block Diagram
Block Diagram Section11.1 - Block Diagram Supply 21.6...253 VAC or N.C. 19.2...300 VDC Supply Watchdog D / A Green Current 10 V input Voltage input I- / V- DRST-AC 4179 I + V... -
Page 19: Section 12 Configuration / Operating The Function Keys
In general When configuring the DRST-AC, you will be guided through all parameters and you can choose the settings which fit the application. For each menu there is a scrolling help text which is automatically shown in line 3 on the display. - Page 20 Configuration / Operating the function keys Section 12.1 - Configuration / Operating the function keys output or tag no. Two-point process calibration (CAL): The device can be process-calibrated in 2 points to fit a given input signal . A low input signal (not necessarily 0%) is applied and the actual value is entered via DRSL-DISPLAY/DRST-CM Then a high signal (not necessarily 100%) is applied and the actual value is entered via DRSL-DISPLAY/DRST-CM.
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Page 21: Section 13 Routing Diagram
Routing Diagram Section 13.1 - Routing diagram If no key is activated for 1 minute, the display will return to the default state 1.0 without saving configuration changes. 1 Increase value / choose next parameter 2 Decrease value / choose previous parameter 3 Save the chosen value and proceed to the next menu Hold 3 Back to previous menu / return to menu 1.0 without saving. - Page 22 Routing Diagram blank -/+20 111.1 -/+10 11.11 S4-20 PASS 1.111 9999 CURR 9999 4-20 ACTI 1111 -9999 VOLT -9999 0-20 CURR 0.00 CURR 4-20 ACTI 1.111 5.000 UNIT A RMS DEC.P DISP.LO DISP.HI ANA.OUT O.RANGE OUT.MOD Txt 10 Txt 11 Txt 13 Txt 6 Txt 7...
- Page 23 Routing Diagram ZERO ZERO 0.00 DOWN 60.0 DOWN 0.00 NONE NONE 0.00 To default state ILIM.L VRMS OUT.ERR ILIM.H VRMS OUT.ERR RESP. Txt 50 Txt 51 Txt 54 Txt 52 Txt 53 Txt 54 Txt 15...
- Page 24 Routing Diagram Section 13.2 - advanced settings (ADV.SET) MEM, DISP, VFUN (V-shaped output function) is only available when a CAL, SIM, fixed output range starting at zero is seleceted. SAVE Selectable range as defined by DEC.P, DISP.LO and DISP.HI. PASS, LANG, DIR (direct) and INV (inverted) output can be combined with LOAD all fixed or CUST output ranges.
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Page 25: Section 13.2 Advanced Settings
Routing Diagram Section 13.3 - Help text overview Set correct password Select active output mode [13] Enter advanced setup menu? Select passive output mode Select current input Set Analog output response time in seconds [14] Select voltage input Select Analog Output Function [15] Select 0...5 A input range Enter Language setup... -
Page 26: Section 13.4 Document History
Help text overview [27] Set the input simulation value [28] Enable password protection? [29] Set new password [30] Select language [31] Select direct output mode Select inverted output mode Select V-function output mode [32] Display underrange [33] Display overrange [34] Input underrange [35] Input overrange... - Page 27 Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification.
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