AEC TOUGH Series User manual

Allis Electric Co., Ltd.
Installation Manual
Single-Phase Grid-Connected
Photovoltaic Inverter
TOUGH - Series

All specifications are subject to change without prior notice. Ver. 1.1

These applied symbols are important for human safety. Violation of
warnings may result in injury to persons or cause death.
WARNING！
RISK OF ELECTRIC SHOCK
WARNING！
RISK OF ELECTRIC SHOCK, ENERGY STORAGE TIMED
DISCHARGE
WARNING！
RISK OF DANGER
WARNING！
HOT SURFACE
REFER TO THIS OPERATIONAL MANUAL
THIS MANUAL IS COPYRIGHT PROTECTED.
Copyright©2012 TOUGH-series Products. All rights reserved
by ALLIS Electronic Co., Ltd. Unless otherwise specified, no
part of this manual may be reproduced or utilized in any form
or by any means, including electronic, mechanical or
photocopying, without permission in writing from either Allis
or Allis's legal representative.

Safety Notes
General Cautions
Read and follow all instructions in this manual. Failure to comply
with the warnings in this manual may violate safety standards. The
manufacturer assumes no liability for the customer’s failure to
comply with these requirements.
Installation of the device must be in accordance with the relevant
safety regulations. Correct grounding and over-current protection
must be provided to ensure operational safety.
Pay attention to the high temperature components and sharp edges.
The temperature of the heat sinks on the outside of the device can
reach over 70°C in normal operation. There is the risk of burn injury
when these parts are touched.
Warning, Risk of electric shock
Personnel must remove all conductive jewelry or personal
equipment prior to installation or service of the device, parts,
connectors, and/or wiring.
Only the licensed and qualified electricians are allowed to perform
the installation, wiring, maintenance or modification on the device.
Switch off the circuit breakers before installation and wirings. Never
stand on a wet location when working on installation and wirings.
Even when no external voltage is presented; the inverter can still
contain high voltages and the risk of electrical shock. Allow 5 minutes
for the inverter to discharge completely after disconnecting the AC
and DC sources from the inverter.
The inverter must be provided with an equipment-grounding
conductor connected to the AC ground.
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！
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Maintenance and Clean
Each inverter is well calibrated before shipment and needs no
additional maintenance during normal operation.
Alterations are not to be made and no tampering with the assembly
in the inverter without the manufacturer’s authorization unless
specified elsewhere in this manual. They may result in injury, electric
shock, or fire and void the warranty.
The inverter contains no user serviceable parts inside. Only trained
staff is authorized to repair the unit. Please contact the specialized
dealer or system technician for further examination.
Wipe the enclosure and display lens with a soft cloth. Do not use
aggressive detergent or cleaning solvents.
Switch the DC disconnect on and off at least once per month in order
to clean the contacts of switch.
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Contents
1 INTRODUCTION ............................................................................ 1
1.1 GENERAL ........................................................................................ 1
1.2 SPECIFICATIONS ............................................................................. 2
1.3 FUNCTIONS AND FEATURES ............................................................ 7
1.4 ACCESSORIES .................................................................................. 8
2 INSTALLATION .............................................................................. 9
2.1 PLACEMENT ................................................................................... 9
2.2 MOUNTING ................................................................................... 10
2.2.1 SAFETY NOTES ............................................................................................. 10
2.2.2 INSTALL INVERTER ON WALL .................................................................... 11
2.2.3 CHECK INSTALLATION STATUS ................................................................... 14
2.3 WIRING THE INVERTER ................................................................ 15
2.3.1 SAFETY NOTES ............................................................................................. 15
2.3.2 INTRODUCTION ............................................................................................ 15
2.3.3 DC INPUT WIRING ...................................................................................... 16
2.3.4 COM LINE CONNECTION ........................................................................... 19
2.3.5 AC OUTPUT WIRING................................................................................... 23
3 OPERATION ................................................................................. 25
3.1 OVERVIEW.................................................................................... 25
3.2 LED INDICATION .......................................................................... 26
3.3 BUTTONS ON PANEL ..................................................................... 27
3.4 LCD DISPLAY ............................................................................... 27

3.4.1 OPERATIONAL STATUS ................................................................................ 28
3.4.2 CHECK ERROR MESSAGE ............................................................................ 30
3.4.3 SETTING BEFORE OPERATION.................................................................... 31
3.4.4 INFORMATION .............................................................................................. 33
3.5 DESCRIPTIONS OF ERROR MESSAGES ........................................... 34
3.6 TROUBLESHOOTING ..................................................................... 38
4 TECHNICAL DOCUMENTATION ............................................... 43
4.1 OUTLINE DRAWING ...................................................................... 43
4.2 EFFICIENCY .................................................................................. 44
4.3 MPP EFFICIENCY ......................................................................... 46
4.4 DE-RATING OPERATION ............................................................... 47

List of Figures
Fig 1: Grid connected solar system overview ............................................. 1
Fig 2: Accessories in the package ..................................................................... 8
Fig 3: Hanging surface ....................................................................................... 10
Fig 4: Clearances required for installation ................................................ 11
Fig 5: Fasten the mounting bracket ............................................................. 12
Fig 6: Hook the inverter on the mounting bracket ................................. 12
Fig 7: Fasten the screws ..................................................................................... 13
Fig 8: Enclosure bottom view .......................................................................... 15
Fig 9: Assemble your DC terminals - step 1 ............................................... 17
Fig 10: Assemble your DC terminals - step 2 ............................................ 17
Fig 11: Assemble your DC terminals - step 3 ............................................ 18
Fig 12: Complete your DC terminals ............................................................ 18
Fig 13: RS485 pins assignment ....................................................................... 19
Fig 14: Remove the RS485 port housing .................................................... 20
Fig 15: Assemble the communication cable gland ................................. 20
Fig 16: Assemble the communication cable .............................................. 21
Fig 17: Lock the RS485 port housing ........................................................... 21
Fig 18: Fasten the waterproof cable gland nut ....................................... 21
Fig 19: Multi-inverter wiring by RS485 ...................................................... 22
Fig 20: Assemble your AC terminals ............................................................. 23
Fig 21: Check the phase and ground terminals ....................................... 24
Fig 22: Fasten the gland nut ............................................................................ 24
Fig 23: Push the connector until the latch is positioned ...................... 24
Fig 24: Overview front panel of the inverter ............................................ 25
Fig 25: Outline drawing ..................................................................................... 43
Fig 26: Euro. Efficiency of the TOUGH-3000 = 95.83% ........................ 44
Fig 27: Euro. Efficiency of the TOUGH-3300 = 96.1% ........................... 44
Fig 28: Euro. Efficiency of the TOUGH-4000 = 96.5% ........................... 45

Fig 29: Euro. Efficiency of the TOUGH-5000 = 96.6% ........................... 45
Fig 30: MPP Efficiency of the TOUGH-SERIES .......................................... 46
Fig 31: DC power curve of the TOUGH-3000 ............................................ 47
Fig 32: DC power curve of the TOUGH-3300 ............................................ 47
Fig 33: DC power curve of the TOUGH-4000 ............................................ 48
Fig 34: DC power curve of the TOUGH-5000 ............................................ 48
Fig 35: Temperature de-rating curve of the TOUGH-3000 ................. 49
Fig 36: Temperature de-rating curve of the TOUGH-3300 ................. 49
Fig 37: Temperature de-rating curve of the TOUGH-4000 ................. 50
Fig 38: Temperature de-rating curve of the TOUGH-5000 ................. 50