6.2 Modbus Communications
242 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
Table 6.12 Broadcast Messages for Modbus Communication
Register No.
(Hex.)
Description
0001
Operation signal
bit 0
Run command
1: Run, 0: Stop
bit 1
Reverse run command
1: Reverse, 0: Forward run
bit 2 - 3 Reserved
bit 4
External fault
1: EF0 [Option Card External Fault]
bit 5
Fault Reset
1: Reset command
bit 6 - B Reserved
bit C MFDI terminal DI5 input
bit D MFDI terminal DI6 input
bit E MFDI terminal DI7 input
bit F MFDI terminal DI8 input
0002 Frequency reference 30000/100%
■ Fault Trace/Fault History Contents
The following table lists the fault codes that the commands from monitors U2: FAULT, U3: FAULT HISTORY
read.
Table 6.13 Fault Trace/Fault History Contents
Fault Code
(Hex.)
Name
0002 Uv1 [DC Bus Undervoltage]
0003 Uv2 [Control Power Undervoltage]
0004 Uv3 [Soft Charge Answerback Fault]
0005 SC [Short Circuit/IGBT Failure]
0006 GF [Ground Fault]
0007 oC [Overcurrent]
0008 ov [Overvoltage]
0009 oH [Heatsink Overheat]
000A oH1 [Heatsink Overheat]
000B oL1 [Motor Overload]
000C oL2 [Drive Overload]
000D oL3 [Overtorque Detection 1]
000E oL4 [Overtorque Detection 2]
000F rr [Dynamic Braking Transistor Fault]
0010 rH [Braking Resistor Overheat]
0011 EF3 [ExFault DI3]
0012 EF4 [ExFault DI4]
0013 EF5 [ExFault DI5]
0014 EF6 [ExFault DI6]
0015 EF7 [ExFault DI7]
0016 EF8 [ExFault DI8]
0017 FAn [Internal Fan Fault]
0018 oS [Overspeed]
0019 dEv [Speed Deviation]
001A PGo [Encoder (PG) Feedback Loss]
Fault Code
(Hex.)
Name
001B PF [Input Phase Loss]
001C LF [Output Phase Loss]
001D oH3 [Motor Overheat (PTC Input)]
001E oPr [Keypad Connection Fault]
001F Err [EEPROM Write Error]
0020 oH4 [Motor Overheat Fault (PTC Input)]
0021 CE [Modbus Communication Error]
0022 bUS [Option Communication Error]
0025 CF [Control Fault]
0026 SvE [Zero Servo Fault]
0027 EF0 [Option Card External Fault]
0028 FbL [PID Feedback Loss]
0029 UL3 [Undertorque Detection 1]
002A UL4 [Undertorque Detection 2]
002B oL7 [High Slip Braking Overload]
002C EF9 [ExFault DI9]
002D EF10 [ExFault DI10]
002E EF11 [ExFault DI11]
002F EF12 [ExFault DI12]
0030 Includes oFx Fault [Hardware Fault]
0032 dv1 [Z Pulse Fault]
0033 dv2 [Z Pulse Noise Fault Detection]
0034 dv3 [Inversion Detection]
0035 dv4 [Inversion Prevention Detection]
0036 LF2 [Output Current Imbalance]
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