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OJ-DV / OJ-DV GEN II ventilation drive

EC/PM fan motor frequency drive · BACnet points list

OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive BACnet points list

Updated 12 November 2026

Short answer

The OJ-DV fan drive has BACnet MS/TP on its RS-485 terminals and RJ12 ports. A short list of Binary Values gives run, alarm reset, fire mode and the alarm and warning flags; Integer Values carry the speed setpoint, speed limits, ramps and running data. BACnet MS/TP has to be switched on first, through the OJ PC tool or Modbus.

This page lists 53 BACnet objects for the OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive — 10 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from OJ Electronics’s own free documentation, linked below.

Manufacturer: OJ Electronics
Model: OJ-DV / OJ-DV GEN II ventilation drive
Equipment: EC/PM fan motor frequency drive
Equipment type: VFDs & pumps
BACnet objects: 53 (10 writable)
Transport: BACnet MS/TP
Firmware: AOC 2.50 or later
Also known as: OJ-DV, OJ DV, OJ-DV GEN II, DV GEN II, OJ Drives DV, 670092, 67855
Source document: DV GEN II BACnet application note (OJ DV BACnet MS/TP protocol) · 670092 · rev. 05/24

Download CSV 53 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

Reference only, provided as-is: verify against OJ Electronics’s current documentation and the live device before use. Not official OJ Electronics information. Terms of use.

BMS integration notes: OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive

Integration in brief

Enable BACnet MS/TP on the drive, then write the speed setpoint to IV 0 and set BV 0 to run. Read IV 8 and IV 7 for actual speed and output, and the BV alarm flags for faults; BV 1 resets alarms.

Minimum points to map

The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.

Object	Name	Why	Access
BV 0	Motor ON/OFF	Run command (1 = on); clears on any error	Write
IV 0	Prc Set	Speed setpoint, 0-10000 = 0-100.00 %	Write
BV 1	Reset Alarms	Alarm reset (1 = reset)	Write
IV 8	RPM Out	Motor speed, rpm	Read
IV 7	Prc Out	Output level, x0.01 %	Read
IV 12	Power In (Filtered)	Input power, W	Read
BV 15	Internal Stop	Internal stop alarm	Read
BV 10	Rotor Blocked	Rotor blocked alarm	Read

Enable & remote start

BACnet MS/TP must be enabled (OJ PC tool or Modbus coils); then BV 0 starts and stops the motor.

Network setup

Out of the box the drive talks Modbus (address 54, 38400 baud, no parity, 1 stop bit); BACnet MS/TP is switched on from the OJ PC tool (Alternative device communications) or through Modbus coils.
MS/TP settings: baud 9600-115200, MAC 0-127, Max Master 1-127, device instance 0-4194302 (Modbus holding registers).
OJ publishes an EDE file for the object list on its product page.

Watch out for

BV 0 drops back to 0 on any error, so the BMS has to set it again after the fault is cleared.
Do not write BV 4 = 0: it turns BACnet MS/TP off until it is re-enabled through Modbus.
IV 0 reflects the actual setpoint when analog control is active.

OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive BACnet objects

Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.

53 of 53 shown

Type

BinaryOther

Access

Units

Show

OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive BACnet Points List
			Description			States
BVmin	0	Motor ON/OFF	Run command; drive clears it on any error		Write	1=ON
BVmin	1	Reset Alarms	Alarm reset; returns to 0 after the reset		Write	1=Reset
BV	2	Fire Mode	Fire mode active		Write	1=Active
BV	3	Motor Output OFF	Keep motor output off		Write	1=Keep motor output off
BV	4	BACnet Enable	0 turns BACnet MS/TP off (recover via Modbus)		Write	1=BACnet active
BV	5	V LO Alarm			Read	1=Alarm
BV	6	V HI Alarm			Read	1=Alarm
BV	7	I HI Alarm			Read	1=Alarm
BV	8	Temperature High			Read	1=Warning
BV	9	Input Phase Error			Read	1=Warning
BVmin	10	Rotor Blocked			Read	1=Alarm
BV	11	Current Limit			Read	1=Warning
BV	12	Voltage Limit			Read	1=Warning
BV	13	Rotor Direction			Read	1=Alarm
BV	14	EEPROME error			Read	1=Warning
BVmin	15	Internal Stop			Read	1=Alarm (Stop)
BV	16	Earth Fault			Read	1=Alarm
BV	17	Motor Phase Error			Read	1=Alarm
BV	18	Communication Error MOC			Read	1=Alarm
BV	19	Ext 24 V Supply overload			Read	1=Overload
BV	20	MOC in Bootloader			Read	1=Alarm
BV	21	Communication Error IOM			Read	1=Warning
BV	22	Motor Overheat IOM			Read	1=Alarm
BV	23	STO Fault			Read	1=Alarm
BV	24	STO test failed			Read	1=Self test failed
IVmin	0	Prc Set	Speed setpoint, 0-100.00 %; value x0.01	%	Write
IV	1	min RPM	Minimum motor speed	rpm	Write
IV	2	max RPM	Maximum motor speed	rpm	Write
IV	3	Up Ramp Time	Acceleration ramp time	s	Write
IV	4	Down Ramp Time	Deceleration ramp time	s	Write
IV	5	AOC SW Version	value x0.01		Read
IV	6	MOC SW Version	value x0.01		Read
IVmin	7	Prc Out	Output level; value x0.01	%	Read
IVmin	8	RPM Out	Motor speed	rpm	Read
IV	9	Intern Temp	value x0.01	°C	Read
IV	10	V IN_RMS		V	Read
IV	11	I Out		mA	Read
IVmin	12	Power In (Filtered)		W	Read
IV	13	Operation Minutes		min	Read
IV	14	Operations Days		days	Read
IV	15	Extern Set	External (analog) setpoint input	V	Read
IV	16	V DC Bus (Peak)		V	Read
IV	17	V motor (Peak)		V	Read
IV	18	Power Consumption Wh		Wh	Read
IV	19	Power Consumption kWh		kWh	Read
IV	20	Power Consumption MWh		MWh	Read
IV	21	BACnet Software version	value x0.01		Read
IV	22	Vin L1 - GND (RMS)		V	Read
IV	23	Vin L2 - GND (RMS)		V	Read
IV	24	Vin L3 - GND (RMS)		V	Read
IV	25	Vibration_SUM_RMS		2 mg	Read
IV	26	AOC Thermist.Temp	value x0.01	°C	Read
IV	27	CurrentTimeLow1		s	Read

Object ID lookup: OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive point IDs by name

BV0Motor ON/OFF
BV1Reset Alarms
BV2Fire Mode
BV3Motor Output OFF
BV4BACnet Enable
BV5V LO Alarm
BV6V HI Alarm
BV7I HI Alarm
BV8Temperature High
BV9Input Phase Error
BV10Rotor Blocked
BV11Current Limit
BV12Voltage Limit
BV13Rotor Direction
BV14EEPROME error
BV15Internal Stop
BV16Earth Fault
BV17Motor Phase Error
BV18Communication Error MOC
BV19Ext 24 V Supply overload
BV20MOC in Bootloader
BV21Communication Error IOM
BV22Motor Overheat IOM
BV23STO Fault
BV24STO test failed
IV0Prc Set
IV1min RPM
IV2max RPM
IV3Up Ramp Time
IV4Down Ramp Time
IV5AOC SW Version
IV6MOC SW Version
IV7Prc Out
IV8RPM Out
IV9Intern Temp
IV10V IN_RMS
IV11I Out
IV12Power In (Filtered)
IV13Operation Minutes
IV14Operations Days
IV15Extern Set
IV16V DC Bus (Peak)
IV17V motor (Peak)
IV18Power Consumption Wh
IV19Power Consumption kWh
IV20Power Consumption MWh
IV21BACnet Software version
IV22Vin L1 - GND (RMS)
IV23Vin L2 - GND (RMS)
IV24Vin L3 - GND (RMS)
IV25Vibration_SUM_RMS
IV26AOC Thermist.Temp
IV27CurrentTimeLow1

Integration notes

Integer Value objects (IV) carry scaled whole numbers; values marked x0.01 have two implied decimals (IV 0 = 10000 means 100.00 %).
The first-generation OJ-DV note (67855 10/20) lists BV 0-22 and IV 0-20 with the same names; BV 23-24 (STO) and IV 21-27 come from the GEN II note only.
The GEN II table also prints a CurrentTimeHigh1 row with no object ID; it is left out here.
Writing 0 to BV 4 turns BACnet MS/TP off; it comes back only through Modbus or protocol auto-detect.

Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the OJ-DV / OJ-DV GEN II ventilation drive and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.

Questions about the OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive

How many BACnet points does the OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive have?

This list has 53 BACnet objects: 25 binary values, 28 integer values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive BACnet points are writable?

10 of the 53 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done.

Where is the official OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive BACnet documentation?

The source is DV GEN II BACnet application note (OJ DV BACnet MS/TP protocol) (670092), revision 05/24, published free by OJ Electronics at https://ojelectronics.com/drives/wp-admin/admin-ajax.php?action=productdownload&media_id=63476983&filename=670092-05-24-DV+GEN+II+BACNET+APPLICATION+NOTE_GB_Web.pdf&view=true.

What are the minimum BACnet points to integrate the OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive?

Start with BV 0 Motor ON/OFF (Run command (1 = on); clears on any error); IV 0 Prc Set (Speed setpoint, 0-10000 = 0-100.00 %); BV 1 Reset Alarms (Alarm reset (1 = reset)); IV 8 RPM Out (Motor speed, rpm); IV 7 Prc Out (Output level, x0.01 %); IV 12 Power In (Filtered) (Input power, W); BV 15 Internal Stop (Internal stop alarm); BV 10 Rotor Blocked (Rotor blocked alarm).

How do I enable BMS control of the OJ Electronics OJ-DV / OJ-DV GEN II ventilation drive?

BACnet MS/TP must be enabled (OJ PC tool or Modbus coils); then BV 0 starts and stops the motor.

How do I check these points on the real OJ-DV / OJ-DV GEN II ventilation drive?

Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.

More OJ Electronics BACnet points lists

Source: DV GEN II BACnet application note (OJ DV BACnet MS/TP protocol) · 670092 · rev. 05/24. Object names, instances and units are reproduced as published; descriptions are our own.