What type of oil is in the TEC gearboxes?

All TEC FCNDK and Varvel products are filled with ISO VG 320 synthetic oil as standard for general and industrial use, other oil types are available upon request however there would be an additional cost for these, they are:
  • Food Grade oil
  • Mineral 220 oil (which is actually the standard in the TEC WK range)
TEC Variators are filled with automatic transmission fluid (ATF) for horizontal B5 mounting as standard

What mounting orientations are an FCNDK suitable for?

FCNDK sizes 25-90 can be universally mounted. For FCNDK sizes 110-150, please let us know how this will be mounted when you order and we will fill the oil appropriately. These sizes are filled for B3 horizontal foot mounting as standard.

What is a 7 series or Angular contact bearing?

A 7 series bearing is also known as an angular contact bearing or a thrust bearing. The code for this would be 7316 instead of the standard 6316. They are bearings that have a higher weight carrying capability in comparison to a normal ball or roller bearing and we recommend that these are fitted 280 frame and above on motors that are vertically shaft down mounted (V1) on the drive end, to help withstand the weight of the motor’s rotor.

What is an insulated bearing?

An insulated bearing is a bearing that stops excess eddy currents from inverters travelling into the stator and potentially making the motor shaft live. The insulated bearing would normally be fitted on the none drive end of the motor and generally we would only fit one. We fit these on request but recommend that any motor 250 frame and above have these fitted when the motor is supplied by an inverter.

What is a NU bearing?

A NU or NJ bearing is a roller bearing. These are normally fitted in applications where side loads are excessive in comparison to the standard ball bearings rating. NU bearings are standard on our 4,6 and 8 pole motors in 315 and 355 frame. Roller bearings are available in other sizes and are always re-greasable so need to be fitted to a motor that has re-greasing tubes as standard.

What does C3 mean?

C3 is the clearance tolerance between the outer race of the bearing and the internal of the bearing housing. All of our motor bearings are C3 tolerance although other tolerances are available upon request.

Which bearings are fitted in our motors?

Aluminium are fitted with either 2RS or ZZ NSK bearings throughout the range. Cast iron are fitted with standard re-greasable bearings which have no reference after, just the bearing number (E.G 6309 C3 instead of 6309 2RS C3).

What is a 2RS bearing in comparison to a ZZ or 2Z bearing?

2RS means that the bearing is sealed for life with 2 rubber shields. ZZ or 2Z means that the bearing is sealed for life with 2 metal shields.

When is forced ventilation required and what is the benefit?

A force vent fan is a fan that should be supplied with a constant 230/1/50 or 400/3/50 supply depending on the type fitted. They are normally fitted to motors that are run on an inverter below 25hz or above 75hz. The advantage is that the fan is constant running so even when the motor is run slowly, it can still be cooled by the force vent fan.

What is HTL and TTL on encoders?

HTL and TTL are the different incremental encoder signal types. Our standard range of W and S encoders are HTL (Push-Pull) signal but TTL (RS422) is available upon request on factory delivery times..

What is the difference between 1024PPR encoders and 2048PPR encoders?

PPR stands for pulses per revolution so a 1024 pulses 1024 times per revolution and a 2048PPR 2048 times. The software controlling the encoder will depend which option the customer requires.

What is an encoder and what does it do?

An encoder is a feedback devise that is fitted to the motor shaft. The idea of this is that the encoder senses the speed of the motor shaft and feeds this back to whatever software is installed on the other end of the cables. They are normally used when the exact speed of a motor is critical.

What is the benefit of epoxy paint?

Epoxy paint is a thicker, more resistant paint finish to the standard that is sprayed on our motors. Epoxy paint is normally used in saline atmospheres to stop salt in the air eroding the motors. It can also be used in areas where there is a risk of chemical erosion.

What is Tropicalisation?

Tropicalisation is a process where an anti-tracking varnish is sprayed onto the windings to prevent winding ingress and fungi growth when the motor is installed in tropical conditions.

What does an anti-condensation heater do

An anti-condensation heater is used in motors that will work in cold environments, to stop the motor from condensating when it is turned off. The heater enables the winding to cool down slowly rather than going from very hot to very cold, meaning that condensation risk is eliminated.

My single phase motor is running hot, why is this?

Single phase motors generally operate with a case temperature of around 60-70°C. For anything over this it could be either underload or overload. Underloading is a problem on single phase motors as the motor will always full close to full load current and any excess energy is dissipates as heat causing excessive case temperatures. TEC recommend that the closest possible single phase motor is selected for the application requirements. Another solution to this for motors 1.5kw or smaller is to use a 1ph-3ph inverter and a 3ph motor, for more details please contact the sales team.

What is the normal ambient temperature for motors?

-20°C to +40°C is the design ambient for all of our motor ranges. For any requirements outside of this range, please contact the sales team who will be able to advise the best possible solution.

What are the 2 blue cables in the connection block on 3 phase motors?

They are PTC thermistors that give a resistance value to show whether the motor winding is running within its temperature limits or overtemperature. They need to be connected to a PTC thermistor relay and the thermistors themselves do not disconnect the supply, they are only for measurement. At normal temperature, they will output 250 ohms and when the rated temperature has been exceeded, they will output over 2000 ohms

Drive will only run at 0.8hz

Check that you have got P-10 set to the motor speed and also P-01 and P-02 set in RPM rather than Hz, when you change P-10 to the motor speed, this should automatically change.

How can I wire in a “drive tripped” lamp?

Wire the lamp between 7 and 8 assuming 24vDC and set P-14 to 101 and P-25 to 3.

I want to wire in a 3 wire forward and reversing switch in, how do I do this?

Wire common into control terminal 1, switch cables to control terminals 2 and 3. Put a cable link in-between control terminals 1 and 4 Set P-14 to 101 and P-15 to 7.

I have wired the supply and the inverter up, switched on and it just displays stop and will not run on the green button?

If unswitched drive (no POT on the front) in IP66 or IP20 then ensure that a link is present in-between control terminal 1 and 2 (a closed switch will also work) and ensure that P-12 is set to 1 or 2 for keypad control.