Summary of Contents for OJ Electronics DRHX Series
- Page 1 INSTRUCTIONS OJ DRHX OJ DRHX 1-8Nm A DRIVES PROGRAMME DEDICATED TO ROTARY HEAT EXCHANGERS...
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Page 2: Table Of Contents
Display ..............25 © 2023 OJ Electronics A/S... - Page 3 OJ Electronics. The OJ trademark is a registered trademark of OJ Electronics A/S. © 2023 OJ Electronics A/S Notice! The language used in the original documentation is English.
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Page 4: Product Presentation
• Technical descriptions, drawings and figures must not be wholly or partly copied or disclosed to third parties without the permission of OJ Electronics A/S. • All rights are reserved by OJ Electronics A/S if the product is included in patent rights or other form of registration. -
Page 5: Ensuring Safety Before Installation
The OJ DRHX can only be used to control stepper motors supplied by OJ Electronics A/S. Never try to connect or control other types of stepper motor. -
Page 6: Emc - Electromagnetic Compatibility
EMC filter. Approvals and certifications CE marking • OJ Electronics A/S hereby declares under sole responsibility that the product complies with the following European Parliament directives: • LVD - Low voltage: 2014/35/EU • EMC - Electromagnetic compatibility: 2014/30/EU •... -
Page 7: Product Programme
D-Shaft diameter Ø12 mm Ø12 mm Ø12 mm Ø12 mm Enclosure rating (IPXX) IP54 IP54 IP54 IP54 * 8 Nm torque at max. 250 rpm – but only max. 5 Nm torque at max. 400 rpm © 2023 OJ Electronics A/S... -
Page 8: Extension Cable Programme
Enclosure rating Weight (kg) Temperature range, operating (°C) / (°F) Manufacturer's logo Manufacturer’s website Manufacturer's postal address Country of manufacture CE approved, logo Disposal, logo Bar code EAC approved,logo UL approved, logo UKCA approved, logo © 2023 OJ Electronics A/S... - Page 9 Order number Sequential Year number • Sequential number O O O O O S S S S S • Year of manufacture Week of Order number Unit number Year of • See table 10.5 production production © 2023 OJ Electronics A/S...
- Page 10 “N” : No display “220” : 220W “D” : 3 x 7 segment “690” : 690W Sealing grade: “790” : 790W “5” : IP 54 “7” : IP 54 CE/UL Figure 10.6.2 - Stepper motor; product ID © 2023 OJ Electronics A/S...
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Page 11: Exploded And Dimensioned Drawings
RJ12 RS-485 interface connector (2 x RJ12) 4-pole DIP switch A/D control and signal terminals, depending on variant Supply terminals (L, N, PE) 3 x 7-segment display - depending on variant Connection terminals for stepper motor (U, V, W, PE) © 2023 OJ Electronics A/S... -
Page 12: Drive - Dimensioned Drawing
OJ-MRHX-3P02-03C7 OJ-MRHX-3P04-03C7 OJ-MRHX-3P08-03C7 56 mm 85 mm 85 mm 85 mm 47 mm 69.6 mm 69.6 mm 69.5 mm 52 mm 73 mm 73 mm 73 mm 102 mm 70 mm 100 mm 159 mm © 2023 OJ Electronics A/S... -
Page 13: Mechanical Installation
• The fourth screw can also be used to fit an electrical equalisation conductor, see section 13.5. • The drive may not be installed in direct sunlight. • Dimensioned drawing, see fig. 11.1 © 2023 OJ Electronics A/S... -
Page 14: Stepper Motor
(N) (see fig 12.3). • The pulley must however be su ciently large to achieve the desired rotor speed at maximum speed, while still transferring power to the belt. © 2023 OJ Electronics A/S... -
Page 15: Rotor Friction
• If natural drafts through the air handling unit cause the rotor to rotate even when it has not received an operating signal, there is a risk that the stepper motor will induce voltage on the OJ DRHX stepper motor terminals, making them dangerous to touch. © 2023 OJ Electronics A/S... -
Page 16: Emc-Compliant Installation
• To prevent potential di erences between system components, an equalisation conductor must always be fitted. • A potential equalisation connection must always be installed between the stepper motor and the chassis of the air handling unit (see section 12.2). © 2023 OJ Electronics A/S... -
Page 17: Leakage Current Risk When Earthed (Pe)
• Check that the voltage supply to the OJ DRHX has been disconnected before opening the cover. • Wait approx. 3 minutes after disconnecting mains voltage before removing the cover. • The drive can be opened using a screwdriver or similar (see fig.13.8.1) © 2023 OJ Electronics A/S... -
Page 18: Spring Terminals
• The cover must only be removed by OJ Electronics A/S, as all repairs to defective OJ DRHX units must be carried out at the OJ Electronics A/S repair department. • Never attempt to perform repairs on a defective product. -
Page 19: Terminal And Connector Overview
-Bus A DIG. IN3 6: +12V -Gnd 7: DI3 8: RL.NC -Bus B 9: RL.C DIG.RELAY OUT RJ12 RS-485 interface Slave -Bus A 10: RL.NO -Gnd 11: GND DIG.IN2 12: DI2 13: GND DIG.IN1 14: DI1 © 2023 OJ Electronics A/S... -
Page 20: Mains Voltage Connection
6-wire, unshielded, 30 AWG/0.066 mm² (flat/telecom cable). • When installing the RJ12 connectors, note that the connectors must be aligned so that the colour sequence in the connectors is the same at both ends (see fig. 13.14.1). © 2023 OJ Electronics A/S... -
Page 21: Analogue/Digital Signal Connections
• For further information on using the spring GND: 5 +12V: 6 terminals, see section 13.10. DI3: 7 RL_NC: 8 RL_C: 9 Note RL_NO: 10 GND: 11 DI2: 12 NOTE! Only applies to: GND: 13 • OJ-DRHX-1055-MAD5 DI1: 14 • OJ-DRHX-1220-MAD5 © 2023 OJ Electronics A/S... -
Page 22: 0-10V In
• DI1 = Alarm reset • DI2 = Engage external rotor guard • DI3 = Signal from external rotor guard - see section 17 Note Digital input functions can be reconfigured using RS-485 interface commands. © 2023 OJ Electronics A/S... -
Page 23: Closing Of The Oj Drhx
The connector is properly assembled when the locking pawl on both sides of the connector on the motor cable is in firm connection with the connector on the extension cable. © 2023 OJ Electronics A/S... -
Page 24: Functions And Settings
Functions and settings 15.1 DIP switch – settings and functions The OJ DRHX series is equipped with 4 DIP switches for setting e.g. the stepper motor size and maximum motor speed (see table 15.1.1). Table 15.1.1 DIP1 DIP2... -
Page 25: Led Indicator
Please note, that when pressing the test button for more than 20 sec. the calibration function of the internal rotor guard may be triggered, (see chapter 15.15) 15.3 LED indicator The OJ DRHX series is fitted with an LED indicator Figure 15.3 - see fig. 15.3. LED can be viewed both with open and closed cover. -
Page 26: Control
• If the OJ DRHX is to be controlled via RS-485 interface, Coil Stat Bit register 8 must be set to ”0” = ”Protocol control" (see RS-485 interface) • Alarms and operating status can still be monitored via RS-485 interface, even if “RS-485 interface control” is not activated. © 2023 OJ Electronics A/S... -
Page 27: Rotation Monitoring In General
15.9 Boost function • The OJ DRHX series has a built-in “Start function” which automatically allows higher current for the motor during start-up. • The OJ DRHX can deliver up to 150% of rated current (stated in mA) to the stepper motor during start-up (max. -
Page 28: Display Of Actual Speed
7. If the stepper motor continues to run for more than one minute, a calibration needs to be run. 8. To recalibrate: Press and keep pressing the test button (10–20 sec.) until LED flashes orange. 9. After recalibration you can turn o the OJ DRHX and reapply the belt. © 2023 OJ Electronics A/S... -
Page 29: Oj-Drhx-Pc-Tool - Connection And Functions
INSTRUCTIONS OJ DRHX 1-8Nm | Accessory OJ-DRHX-PC-Tool – connection and functions The OJ DRHX series can be configured using Figure 16.1 OJ-DRHX-PC-Tool, which must be connected to Via RS-485 interface cable using either the RJ12 connections or spring terminals. . -
Page 30: Modbus
"GND", "+12V" and "DI3" (see fig. 17.2). 1: GND 2: 0-10V • The rotor guard is a triple-conductor induction 3: A sensor and is supplied by OJ Electronics A/S as an 4: B BLUE 5: GND accessory. BROWN... -
Page 31: Detection Of Active Modbus
If the alarm situation passes, the alarm is automatically reset and the OJ DRHX restarted. If the maximum number of restarts (5 times/60 min) is exceeded, the alarm must be reset. The alarm can be reset by means of a RS-485 interface command. © 2023 OJ Electronics A/S... -
Page 32: Maintenance
Never attempt to repair a defective OJ DRHX drive or MRHX motor. Contact your supplier to obtain a replacement. Additional technical data is available on request from your supplier or OJ Electronics A/S. Liability This instruction must be observed, otherwise the liability of the manufacturer will be void. -
Page 33: Troubleshooting
All trademarks in this material are property of the respective companies. OJ and the OJ logotype are trademarks of OJ Electronics A/S. All rights reserved. - Page 34 Swap 2 phase wires on the OJ DRHX stepper motor terminals. running in wrong cable direction RS-485 interface register is incorrectly Rotation direction can also be inverted via RS-485 interface configured command or using the OJ-DRHX-PC-Tool. © 2023 OJ Electronics A/S...
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Page 35: Fuse And Circuit Breaker Specifications
The OJ DRHX must be disposed of in accordance with applicable local rules and regulations. The OJ DRHX meets the requirements on marking of electronic waste contained in the European WEEE Directive 2012/19/EU. © 2023 OJ Electronics A/S... -
Page 36: Technical Specifications
EN 61800 Part 2 North America UL -61800-5-2 / CS22.2.174 RoHS Directive Product approvals Note: Data are valid at: nominal supply voltage and at +25°C ambient temperature *1: IO option module is mounted as standard © 2023 OJ Electronics A/S... - Page 37 OJ Electronics A/S Stenager 13B • DK-6400 Sønderborg Tel. : +45 73 12 13 14 • Fax +45 73 12 13 13 oj@ojelectronics.com • www.ojelectronics.com The trademark is a registered trademark belonging to OJ Electronics A/S · © 2023 OJ Electronics A/S...
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