8 Standard Unidrive Macros for Uni2403 or any Classic UniDrive

control techniques unidrive

8 Standard Unidrive Macros for Uni2403 or any Classic UniDrive

Here at MRO Electric, we get a lot of questions about Unidrive Macros for the legacy Classic drives. This post explains the 8 available macros for programming a Uni2403 or another Unidrive part. You can refer to the product manual for the parameters common to all of these macros. This table shows the available Unidrive macros and their codes:

TypeDescription
FaultsWhat happens when a fault occurs?
- The appropriate fault reaction is initiated
- Status signal ZSW1.3 is set.
- The fault is entered in the fault buffer.

How are faults eliminated?
- Remove the original cause of the fault
- Acknowledge the fault
AlarmsWhat happens when an alarm occurs?
- Status signal ZSW1.7 is set.
- Alarms are "Self Acknowledging" meaning they are reset when the cause of the alarm has been eliminated.

Now that you know the code for each macro, here’s a little information about how you would use each one:

Macro 1 – Easy Mode

The Easy mode macro for Unidrive classic gives the simplest operation of the drive for basic applications. It is identical to the default condition except that menu 0 has fewer parameters.

Macro 2 – Motorised potentiometer

The Motorised potentiometer macro enables the drive’s own internal motorized potentiometer to control the speed of the drive via digital inputs. A digital input selects between an analog speed reference and the motorized potentiometer reference.

Macro 3 – Preset frequencies/speeds

The Preset reference Unidrive macro enables the use of preset references to control the speed of the motor via digital inputs. A digital input selects between an analog speed reference and the present references.

Macro 4 – Torque control

The Torque control macro configures the drive for use in Torque control mode, selectable via a digital input. Analog input 1 is configured for the torque reference. When in speed control analog 2 is the speed reference. When in torque control with the drive in closed loop mode analog input 2 is the speed override reference. Enabling torque mode with the drive-in open loop mode will put the drive into pure torque control. In closed loop mode, the drive will be put into torque control with speed override.

Macro 5 – PID (set-point control)

The PID control macro enables the drive’s own internal PID controller to control the speed of the motor. Analog input 1 is configured for the main speed reference, analog input 2 is the PID reference and analog input 3 is the PID feedback. A digital input selects between an analog speed reference and the PID control.

Macro 6 – Axis-limit control

The Axis limit control macro configures the drive for use with limit switches so that the drive is stopped when a position limit has been reached. The speed reference can be either unipolar or bipolar.

Macro 7 – Brake control

The brake control macro configures the drive to apply or release a mechanical brake on a motor in a crane or hoist application. The drive issues a brake release signal via a digital output when the relevant conditions are met.

Macro 8 – Digital lock/shaft orientation

^Only available in closed loop vector or servo operating modes.

Digital lock:

The drive operates as a slave in a closed loop master-slave system. The slave motor is digitally locked to the master motor.

Shaft orientation:

The motor speed is controlled in the same way as for default operation, but the motor shaft can be orientated to a specified angular position before and/or after running the motor.

MRO Electric and Supply has new and refurbished Control Techniques parts available including Control Techniques Unidrive and Unidrive SP series. We also offer repair pricing. For more information, please call 800-691-8511 or email sales@mroelectric.com.

Unidrive Classic

Troubleshooting a Unidrive with Hardware Fault Trip Codes

unidrive trip codes

Troubleshooting a Unidrive with Hardware Fault Trip Codes

Unidrive Classics are going to trip at one time or another. Refer to this list of Unidrive trip codes next time your Uni1405 or other Unidrive is throwing a mysterious trip error.

HF81 – Software Error (odd address word)
HF82 – Large option module removed
HF83 – Power Board Code Failure
HF84 – Current Offset Trim Failure
HF85 – A to D failure (ES-CC step)
HF86 – Interrupt Watchdog failure
HF87 – Internal ROM check error
HF88 – Watchdog Failure
HF89 – Unused Interrupts (nmi as source)
HF90 – Stack Overflow
HF91 – Stack Underflow
HF92 – Software Error (undefined op code)
HF93 – Software Error (protection fault)
HF94 – Software Error (odd address word)
HF95 – Software Error (odd address inst.)
HF96 – Software Error (illegal ext bus)
HF97 – Level 1 Noise
HF98 – Interrupt Crash
HF99 – Level 1 Crash

A few notes on these Unidrive trip codes:

  • HF trips are internal hardware faults within the drive. Powering the drive down and re-applying power could clear the fault.
  • Resetting the drive will not clear a HF trip.
  • If a HF trip occurs, the Drive Healthy relay will open to indicate this
  • The serial communications will not function during a HF trip
  • The only HF trip that can be caused by the user is a HF82 trip where a
    large option module is removed while the drive is powered up.The drive should be powered down, the module re-fitted correctly and the power reapplied to clear the trip

MRO Electric and Supply has new and refurbished Control Techniques, parts available including the Control Techniques Unidrive Classic and Control Techniques Unidrive SP series. We also offer repair pricing. For more information, please call 800-691-8511 or email sales@mroelectric.com.

Real-Time Data Collection using PLC Networking

This article from Control Engineering offers a great preview of the future of manufacturing with PLCs. Ethernet connections allow for real-time data collection, which introduces great networking potential between workers and the machines. Because PLCs can be programmed to make decisions based on input variables, we can automate more tasks but still be confident that process variables are under control. The development and innovation of Modicon Quantum I/O Modules create the backbone of the PLC networking configuration.

Another exciting revelation in the article:

To meet the growing operation needs of industrial automation, networks continue to expand, offering monitoring and control capabilities in areas not previously possible. Device networks are now using fieldbus-to-Ethernet integration to develop enterprise-wide control networks. Merging networking functionality with PLCs enables users to off-load main processor tasks for distributed control in the field, placing control-level devices closer to the action. Additionally, by combining control with distributed I/O, manufacturers can lower their total cost of operation by streamlining data acquisition, communication, and factory-wide connectivity.

We can’t wait to see how users pair the networking capabilities of PLCs with infrastructure already in place on the factory floor.

MRO Electric and Supply has new and refurbished Modicon products available including the Modicon Quantum series. We also offer repair pricing. For more information, please call 800-691-8511 or email sales@mroelectric.com.

North Carolina Manufacturing Expansion Project

North Carolina Manufacturing Expansion Project

Great news from our home state of North Carolina – the manufacturing company Oiles America is expanding their facility outside of Charlotte and increasing production capacity by 75%. From an article in the Charlotte Observer:

The project was completed to help increase manufacturing capacity and enable the company to expand its product line. Included in the expansion are increased research and development facilities, and renovations to existing office and warehouse spaces.

The project also will incorporate energy efficiency technology and occupancy sensors, and it has the potential to use solar energy in the future.

MRO Electric and Supply has new and refurbished FANUC CNC, FANUC Robotics, Control TechniquesSiemens, Modicon, Yaskawa, MagneTek, Saftronics, and Omron products available. We also offer repair pricing. For more information, please call 800-691-8511 or email sales@mroelectric.com.