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Operating Instructions
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ENERGYMETER
MID
Electronic Active Energy Meters
3-349-618-15
U1281/U1289/U1381/U1387/U1389
3/12.18
MAIN PISTRIBUTION – PRODUCTION
Edited in Germany • Subject to change without notice • A pdf version is available on the Internet
GMC-I Messtechnik GmbH
Südwestpark 15
90449 Nürnberg • Germany
Phone +49 911 8602-111
Fax
+49 911 8602-777
E-Mail
info@gossenmetrawatt.com
www.gossenmetrawatt.com
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Summary of Contents for Gossen MetraWatt MID U1281
- Page 1 Operating Instructions ENERGYMETER Electronic Active Energy Meters 3-349-618-15 U1281/U1289/U1381/U1387/U1389 3/12.18 MAIN PISTRIBUTION – PRODUCTION Edited in Germany • Subject to change without notice • A pdf version is available on the Internet GMC-I Messtechnik GmbH Südwestpark 15 90449 Nürnberg • Germany Phone +49 911 8602-111 +49 911 8602-777 E-Mail...
- Page 2 Safety Precautions – Symbols – Check the specified nominal voltage on the serial plate before placing the instrument into service. – Observe the maximum voltage of the pulse output. – Make sure the connector cables are not damaged, and that they are voltage-free while wiring the instrument. –...
- Page 3 Meaning of Symbols on the Instrument DE MTP 11 B 001 MI-003 Prototype test certificate Total insulation, Safety Class II device Warning concerning a source of danger (Attention, observe documentation!) This device may not be disposed of with the trash. Fur- ther information regarding the WEEE mark can be accessed on the Internet at www.gossenmetrawatt.com by entering the search term ’WEEE’.
- Page 4 Serial Plate – Terminals GMC-I Messtechnik GmbH...
- Page 5 GMC-I Messtechnik GmbH...
- Page 6 Pulse Output – Bus Interfaces External Voltage Source External Voltage Source 24 V DC AC/DC I = max. 100 mA I = max. 27 mA max. 40 V max. 375 V Energy Import Energy Import Standard pulse duration: 30 ms + 5%, Interpulse period: > 30 ms Pulse duration V7/V8: 130 ms + 5%, Interpulse period: >...
- Page 7 Display and Control Panel Test LED The test LED is located between the LCD and the serial plate. The higher the measured power value, the higher the blink rate. If all currents are lower than the starting current, the LED lights up permanently. LED Constant U128x: 10 000 pulses/kWh...
- Page 8 Meanings of Symbols on the LCD Main display (active energy Etot* in kWh or MWh) Auxiliary display (instantaneous power Pmom*) Error: alternating error code and instantaneous power * U138x: CT and VT are taken into consideration Main display is not/cannot be calibrated, if U is displayed.
- Page 9 Key Symbols for Parameters Configuration Key and 2 key bit blanked: Parameters CT, VT or S0 configurable according to fea- tures, can be disabled with enable key. Key displayed with one key bit: Parameters CT, VT or S0 disabled, can be changed after activating enable key. Key blanked, 2 key bit displayed: Parameters CT, VT or S0 (which are / can be calibrated)
- Page 10 Key Operation Querying parameter values CT, VT and S0 Apart from the LCD test, the menu key located between LCD and serial plate serves to query current paramter val- ues and, in the case of active energy meters with special features, to change parameters (provided that the enable key has been activated before).
- Page 11 b) Changing parameter values ➭ Briefly press the enable key first, as described under Item a) (activates operating mode „Change parame- ters“). ➭ Press and hold the menu key once until the read-out test is displayed. ➭ Repeatedly press the menu key until the parameter to be changed appears at the display.
- Page 12 Standard Read-Out Auto 123456 00013 kVArh 1 234 Read-out test Firmware version 888888 0001 0000 8 888888 Auto Calibration read-out 001000 Primary energy 000010 Secondary energy Parameter modifications bus-specific menus see only after enabling interface descriptions U138x with Feature Q1 0200 Auto U138x with Feature Q1...
- Page 13 Auto 00049 00F0H Multifunctional display Feature Reactive energy kVArh — • • Phase voltage U1N, U2N, U3N • — • Delta voltage U12, U23, U13 • — • Current I1, I2, I3 • — • Active power P1, P2, P3, Ptot •...
- Page 14 Error Messages – Reset Read-out If an error occurs, the respective error code and instanta- neous power are displayed alternately. Error Code Meaning Cause/Remedy Maximum value for U1 VHi1 exceeded Maximum value for U2 VHi 2 exceeded Maximum value for U3 VHi 3 exceeded Maximum value for I1...
- Page 15 Declaration of Conformity U128x (U138x: see reverse) GMC-I Messtechnik GmbH...
- Page 16 Repair and Recalibration Note for Test Laboratories Directly measuring meters (U128X): In as-delivered condition, screw terminals 2, 5 and 8 are tightened in order to establish contact between current and voltage inputs. If isolated voltage supply is required for tests, the screw ter- minals can be released (remove screw cover, release screws, pull insulating sleeves over contact pins in the ter- minals and connect simulator voltage).
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