Fuling DZB312 Series VFDs

Overview

Variable frequency drives specialized for CNC router spindles. The drives are made by Fuling Electric, aka Folinn Electric.

Model Numbers

In the DZB312 series manual:

Page 18 (marked 33 in the PDF)

In the DZB300 series manual:

Page 7 (marked 7 in the PDF) shows the model number scheme
Page 8 (marked 9 in the PDF) shows a table of model numbers and recommended component sizing
Page 47 (marked 88 in the PDF) shows the specifications based off the model number ranges

Wiring Diagram

In the DZB312 series manual:

Page 5 (marked 7 in the PDF)

In the DZB300 series manual:

Page 8-9 (marked 10-11 in the PDF) shows an overview of the wiring
Page 9 (marked 12 in the PDF) shows a the power terminal pinout
Page 10 (marked 13 in the PDF) shows a the control terminal pinout

Dimensions

In the DZB312 series manual:

Page 18 (marked 33 in the PDF)

In the DZB300 series manual:

https://www.cncwiki.org/images/a/a4/Fuling_DZB300_Series_Inverter_User_Manual.pdf#page=55 Page 55] (marked 104 in the PDF)

Parameters

In the DZB312 series manual:

Page 10 (marked 18 in the PDF) shows the list of parameters

In the DZB300 series manual:

Page 15 (marked 23 in the PDF) shows the list of parameters
Page 21 (marked 36 in the PDF) shows the detailed description of the parameters

Fault Codes

In the DZB312 series manual:

Page 16 (marked 29 in the PDF) shows a list of fault codes

In the DZB300 series manual:

Page 43 (marked 79 in the PDF) has a flowchart for diagnosing issues

Modbus control

VFD parameters

Parameters relevant for Modbus control:

Function Code	Serial No.	Default Value	Required Value	Description
F0.01	1	1: terminal	2: RS-485	run command source
F0.03	3	1: AVI	6: RS-485	frequency command source
F3.03	81	0: only keypad	2: keypad and RS-485	stop function sources
F4.11	108	0	?	fault automatic reset number
F4.18	115	0: keypad (F4.19)	3: RS-485	PID setpoint source
F4.20	117	0: reserved	3: RS-485	PID feedback source
F6.00	142	1		RS-485 Modbus slave address
F6.01	143	3: 9,600 bps		RS-485 Modbus baudrate
F6.02	144	0: N, 8, 1		RS-485 Modbus parity/data-width/stop-bits
F6.03	145	5		RS-485 Modbus response delay (ms)
F6.04	146	0.0 (invalid)	2.0 (2 seconds)	RS-485 Modbus timeout (s)
F6.05	147	1: continue without alarm	2: stop with alarm (only when in RS-485 mode)	RS-485 Modbus error handling
F6.06	148	0: respond to writes	0: respond to writes	RS-485 Modbus write response

Modbus registers

In the DZB300 series manual (which also applies to DZB312 series):

Page 49 (91 in the PDF) describes the Modbus protocol (should be standards compliant)
Page 53 (100 in the PDF) has the register address map

Register No. (hex)	Register No. (dec)	R/W	Value	Description
0x1000	4096	R/W	1-8 (look in manual)	Modbus controlled command
0x1001	4097	R	1-4	inverter state
0x2000	8192	R/W	-10000 - +100000 (frequency/PID percentage * 100)	frequency/PID setpoint percentage
0x3000	12288	R	(decimal Hz * 10)	frequency setpoint
0x3001	12289	R	(decimal Hz * 10)	output frequency
0x3002	12290	R	???	output current
0x3003	12291	R	(decimal V)	output voltage
0x3004	12292	R	(rpm using parameter F1.03)	output speed
0x3005	12293	R	???	output power
0x3006	12294	R	???	output torque
0x3007	12295	R	(decimal V * 10)	DC bus voltage
0x5000	20480	R	???	inverter fault address
0x5001	20481	R	0-8 (look in manual)	Modbus communication fault

mbpoll

# fault reset (need to test)
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x1000 -t 4:int16 -- 7

# stop
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x1000 -t 4:int16 -- 5

# set forward run
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x1000 -t 4:int16 -- 1

# set reverse run
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x1000 -t 4:int16 -- 2

# set the output frequency/rpm/PID percentage (percentage * 100)
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x2000 -t 4:int16 -- 10000

# monitor command (whatever was previously written, can be invalid)
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x1000

# monitor inverter status
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x1001

# monitor commanded frequency
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x3000

# monitor output frequency
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x3001

# monitor output current
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x3002

# monitor output voltage
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x3003

# monitor output rpm
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x3004

# monitor inverter fault
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x5000

# monitor Modbus communication fault
./mbpoll /dev/ttyUSB0 -b 9600 -s 1 -P none -a 1 -0 -r 0x5001