Hitachi NES1-004SB Quick Reference Manual page 6

Contents
7.8 Set functions related to protection and warning, each output signal ································ 7 - 60
7.8.1 Trip signal (AL) ························································································· 7 - 60
7.8.2 Electronic thermal protection
(b012/b212,b013/b213,b015 to b020,C021,C026,C061) ···································· 7 - 61
7.8.3 Overload restriction/overload notice
(b021 to b026,C001 to C005,C021,C026,C040,C041) ······································· 7 - 63
7.8.4 Overcurrent restraint (b027) ········································································ 7 - 64
7.8.5 Over voltage supression during deceleration (b130 to b134)······························· 7 - 65
7.8.6 External trip (EXT) function (C001 to C005) ···················································· 7 - 66
7.8.7 Automatic carrier frequency reduction (b083,b089) ··········································· 7 - 67
7.8.8 Running signal (RUN) (C021) ······································································ 7 - 68
7.8.9 Frequency arrival signals (FA1, FA2, FA3) (C021,C042,C043) ···························· 7 - 68
7.8.10 Running time over and power-on time over signals (RNT and ONT)
(b034,C021,C026,d016,d017) ······································································ 7 - 70
7.8.11 0 Hz speed detection signal (ZS) (A044/A244,C021,C063) ································ 7 - 70
7.8.12 Logical output signal operation function (LOG1) (C021,C026,C142,C143,C144) ····· 7 - 71
7.8.13 Communication line disconnection signal (NDc) (C021,C026,C077) ····················· 7 - 72
7.8.14 Starting contact signal (FR) (C021,C026) ······················································· 7 - 72
7.8.15 Heat sink overheat warning signal (OHF) (C021,C026,C064) ····························· 7 - 72
7.8.16 Low-current indication (LOC) signal (C021,C026,C038,C039) ····························· 7 - 73
7.8.17 Inverter ready signal (IRDY) (C021,C026) ······················································ 7 - 73
7.8.18 Forward rotation signal (FWR) (C021,C026) ··················································· 7 - 73
7.8.19 Reverse rotation signal (RVR) (C021,C026) ···················································· 7 - 74
7.8.20 Major failure signal (MJA) (C021,C026) ························································· 7 - 74
7.8.21 Window comparators (WC) (detection of terminal disconnection: Dc)
(C021,C026,b060 to b062,b070) ·································································· 7 - 75
7.8.22 Frequency command source (FREF) ····························································· 7 - 76
7.8.23 RUN command source (REF) ······································································ 7 - 76
7.8.24 2nd Motor in operation (SETM) ···································································· 7 - 76
7.8.25 Ground fault detection (C155) ······································································ 7 - 76
7.8.26 Out phase loss detection (C157) ·································································· 7 - 76
7.9 Initializing ··········································································································· 7 - 77
7.9.1 Initialization setting (b084,b085,b180) ··························································· 7 - 77
Chapter 8 Communication Functions
8.1 Communication Specification ················································································· 8 - 1
8.2 Connecting the Inverter to Modbus ·········································································· 8 - 2
8.3 Modbus setting procedure ····················································································· 8 - 3
8.4 Modbus Communication parameter ········································································· 8 - 4
8.5 Modbus Protocol Reference ··················································································· 8 - 5
8.6 Explanation of function codes ················································································· 8 - 9
8.7 Re-calculate the internal variable ············································································ 8 - 18
8.8 Modbus Data Listing ····························································································· 8 - 19
Chapter 9 Error Codes
9.1 Indication of the error ··························································································· 9 - 1
9.2 Error Codes and Troubleshooting ············································································ 9 - 3
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