There are generally two types of encoder:

a. Optical Encoder : absolute and incremental type 
b. Magnetic Encoder: magnetic resistance and magnetic array type 
  Ex.1  Encoder is 5V Line Driver output: 
  Ex.2  Encoder is 12V Open collection output:
  Ex.3  Encoder is 12V PNP output: 
  Ex.4  Encoder is 12V Complementary (Push-Pull) output:

Resource: Operation Manual, Rhymebus frequency inverter, Encoder Option Card.

Please follow the instruction of operation manual of individual inverter, and make correspondent wiring between it’s terminal and encoder.

The ideal phase difference of phases A and B is 90±0?. In fact, most factories use the 90±45?as indication specification. The input waveform is shown as the following diagram. An oscilloscope is usually used for measurement after connecting to the power.

Z phase is always used for calculating the origin position.

After input correct current, turn slowly the Encoder, if the function of Encoder is good, output of each phase varies between zero and half of power voltage on the multimeter (except Z phase).

This is the over-current protective function. When the load of motor increases instantly, motor is stuck, leakage of motor, or output of frequency inverter is short circuit, may lead to jump OC. Please turn off the power, remove the motor wire, measure the insulation impedance of motor, and check if the motor wire to linear impedance is balanced?

This is over-voltage protective function. If the deceleration time set by frequency inverter is too short, the regenerate voltage produced by motor will be added to the DC BUS of frequency inverter, leading to jump OE resulted by too high DC voltage. Please extend the deceleration time of frequency inverter, or install an braking transistor or dynamic brake system and braking resistors for consuming the regenerate voltage, then the OE could be prevented.

We suggest that, if using single-phase power supply for RM5E of 2HP, it's better to integrate with 1HP motor. 2HP motor is recommended for a light load situation.

a.In the description of the operation manual, the inverter is safe to use insurrounding temperature of 50?. The label on the enclosure means that the user should remove the label when the surrounding temperature exceeds 40? for facilitating the ventilation.

b.The higher the surrounding temperature is, the shorter the lifespan of frequency inverter. In order to reduce the possibility of breakdown and extend the lifespan of frequency inverter, one grade higher inverter is suggested.

The reason of frequency inverter fails to restart is due to the low voltage LE1 protective function. Please execute the following steps for resolving the problem:

a.Please set F_060=7 (under voltage detection).

b.Please set F_068= 200 to avoid error message OLO appeared.  

c.Please set short circuit at COM & Tc1, X6 & Ta1, FWD&Tb1.

a.Please check if the U,V,W three-phase line against to linear impedance is balanced?
b.Please check if the insulation of motor is good? 500V, 100Mohm is the minimum standard.
c.Please check if the wiring of U,V,W and X,Y,Z with motor are entirely covered?

If the aforesaid are OK, the problem may result from the damaged sensor of electric current.

OE is the over-voltage protection. The major cause for OE is owing to the inverter deceleration time is too short, the regenerate voltage is produced by motor will be added to the DC BUS of frequency inverter, resulting DC voltage is too high and then the appearance of OE. For consuming the regenerate voltage, please extend deceleration time of frequency inverter or install an braking transistor or dynamic brake system and braking resistors, the jump OE could be prevented.

Besides, the following situations could produce false message of OE:

1.If any SCR equipment is too close to the input end of power supply? 
2.If any driver equipment of great capacity share the same power supply with frequency inverter? For example: air compressor. 
3.The power supply fluctuation is too big. 
4.Is the inverter deceleration time is too short?

Once one of the aforesaid situations is occurred, please install AC reactor between the power supply and frequency inverter. 

Please refer to the parameter F_092 is set at 2 in the operation manual (Parameter are locked. Max. frequency can not over 120Hz), in order to protect user and frequency inverter.

Carry frequency = Function code F_081 X 2.5KHz 

(1)When the carry frequency is higher, the motor noise will be lower.
(2)If it's long distance between motor and frequency inverter, the carry frequency should be set lower than 5KHz, or install an ACL (AC reactor) between motor and frequency inverter.
(3)If the surrounding temperature exceed 40?, the carry frequency should be set lower than 5 KHz; the higher carry frequency, the higher temperature of frequency inverter and motor.

The basic frequency and voltage of frequency inverter will be set according to the motor’s frequency and voltage.

Ex.1 The specification of motor is 380V, 50Hz, the basic voltage of frequency inverter is set at 380V, and the basic frequency is set at 50Hz.

Ex.2 The specification of motor is 220V, 60Hz, the basic voltage of frequency inverter is set at 220V, and the basic frequency is set at 60Hz.

Ex.3 The specification of motor is 220V, 250Hz, the basic voltage of frequency inverter is set at 220V, and the basic frequency is set at 250Hz.

No. The measuring area of clamp meter is designed between 47 ~ 63 Hz, the measuring will not correct beyond this area. A specialized meter is necessary for measuring the output electric current.

No. frequency inverter’s output included harmonic waves, and the specialized PWM meter should be used instead of multimeter to get correct measurement.