HITACHI LYA100A Logical Sequence Card

The drive is fully protected against “normal” abuse and has two LEDs on the front panel to indicate drive status. The servo drive has the following specific protections: 

• Output motor short circuit protection line-to-line and line-to-neutral. 

• Interface to Pacific Scientific's standard motor PTC or a normally closed thermostat to sense motor over temperature. 

• Internal monitoring of the power stage heat sink temperature for drive over temperature.

• Bus over voltage detection. 

• Bus under voltage fault with adjustable threshold. 

• Incorporating the measured heat sink temperature there is an excessive current I*t fault. This fault limits the peak current time and intelligently changes the continuous current fault trip dependent on the measured heat sink temperature to limit the continuous output current. 

• Control voltage under voltage detection. 

• The user +5V output is short circuit to I/O RTN protected. 

• The user +24V output is short circuit protected. 

• All control outputs are short circuit to I/O RTN protected. • When a drive is powered up without valid parameters the power stage cannot be enabled and no damage occurs to the drive.

Fault generation 

The following sequence will occur when the protection circuits generate a fault. The fault source is latched, the output stage is disabled, the Fault mappable output function is activated, and the LED indicates the appropriate fault code. Faults are cleared by activating the Fault Reset input or by turning the 120/240 VAC Control Power OFF and then ON again. Drive Status LEDs See the following table for a detailed list of drive status LED codes.Note: If FaultCode < 6, the red LED will blink the faultcode at a frequency of 1 Hz (on and off in 1 sec) then it will be off for 2 seconds before blinking the sequence again.

                                                                        

Brand display

 ABB、GE/FUANC、FOXBORO、TRICONEX 、BENTLY、A-B、EMERSON 、MOTOROLA、XYVOM、HONEYWELL 、REXROTH、KUKA、NI、DEIF、Yokogawa、WOODWARD、Reliance Electric、SCHNEIDER 、MOOG、PROSOFT、KOLLMORGEN、ICS TRIPLEX、HIMA

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