ITech IT-M7700 Series - Page 11

Copyright © Itech Electronic Co., Ltd.
IX
IT-M7700 Series User Manual
4.9.5 Digital I/O Function ...................................................................................... 67
4.9.6 Set the Output Timer Function .................................................................... 71
4.10 Protection Function.............................................................................................. 71
4.10.1 Set the Over-Voltage Protection (rms) ...................................................... 71
4.10.2 Set the Over-Voltage Protection (peak) .................................................... 72
4.10.3 Set the Under-Voltage Protection (rms) .................................................... 73
4.10.4 Set the Over-Current Protection (rms) ...................................................... 73
4.10.5 Set the Over-Current Protection (peak) .................................................... 75
4.10.6 Set the Over-Power Protection.................................................................. 76
4.10.7 Set the Current Limiting Protection ........................................................... 76
4.10.8 Set the Sense Check Protection ............................................................... 77
4.10.9 Limiting the Setting Value Range .............................................................. 78
4.11 System-Related Operations ................................................................................ 79
4.11.1 Switch Local/Remote Mode....................................................................... 79
4.11.2 Save and Recall Operations...................................................................... 79
4.11.3 Key Lock Function ..................................................................................... 80
4.11.4 Set the Beeper Status ............................................................................... 80
4.11.5 Set the Power-on State ............................................................................. 80
4.11.6 Restore the as-shipped settings................................................................ 81
4.11.7 View the System Information..................................................................... 85
4.11.8 Set the Relay Control ................................................................................ 86
4.12 External Analog Quantity Function (Option) ........................................................ 87
4.12.1 Definition of Analog Interface .................................................................... 87
4.12.2 Enable/Disable Analog Control ................................................................. 89
4.12.3 Analog Quantity Control ............................................................................ 90
4.12.4 Calibrate external voltage control.............................................................. 94
5 Multi-units operation......................................................................................................... 96
5.1 Series Operation .................................................................................................... 96
5.2 Three-phase Operation.......................................................................................... 99
5.3 Multi-Channel Function........................................................................................ 103
6 Routine Maintenance ..................................................................................................... 106
6.1 Instrument Self-Test............................................................................................. 106
6.2 Cleaning and Maintenance .................................................................................. 106
6.3 Prompt Information Reference............................................................................. 107
6.4 Contact of ITECH Engineers ............................................................................... 108
6.5 Return for Repair.................................................................................................. 110
7 Technical Specification .................................................................................................. 111
7.1 IT-M7721.............................................................................................................. 111
7.2 IT-M7721L............................................................................................................ 113
7.3 IT-M7722.............................................................................................................. 115
7.4 IT-M7722D ........................................................................................................... 118
7.5 IT-M7722E ........................................................................................................... 120
7.6 IT-M7722L............................................................................................................ 122
7.7 IT-M7723.............................................................................................................. 124
7.8 IT-M7723D ........................................................................................................... 127
7.9 IT-M7723E ........................................................................................................... 129
A Appendix ........................................................................................................................ 132
A.1 Specifications of Red and Black Test Cables ..................................................... 132
A.2 Built -in Waveforms ............................................................................................. 133