Input Power Supply Over-Voltage Protection; Over-Torque Detection; Torque Limit - Hitachi P1 Basic Instruction Manual

INPUT POWER SUPPLY OVER-VOLTAGE PROTECTION

This function will output an error [E015] when the P-N voltage exceeds the voltage level set in the incoming overvoltage level
selection [bb-62] for 100 seconds continuously due to incoming voltage.
Function
Power supply over-voltage error selection
Power supply over-voltage level

OVER-TORQUE DETECTION

The over-torque detection function is used while operating in control modes (AA121) sensorless vector control (08), zero speed area
sensorless vector control (09), or vector control with encoder (10). If the output torque exceeds the conditional quadrant set value an
over-torque error will occur [E053].
Function
Over torque level (forward driving torque)
Over torque level (reverse regen torque)
Over torque level (reverse driving torque)
Over torque level (forward regen torque)

TORQUE LIMIT

The torque limit function is used while operating in control modes (AA121) sensorless vector control (08), zero speed area sensorless
vector control (09), or vector control with encoder (10). This function can be used to protect the hoist and crane from damage
occurring due to snagging or over-loading by limiting the forward driving torque. The motor will stall if the torque becomes greater
than this value. The value is presented as a whole number. Be sure to set this value 10% higher than the maximum required torque
under 100% load operating at high speed.
Example – 200.0% ( UE-68 = 2000 )
Function
Torque Limit (forward driving torque)
Parameter
bb-61
bb-62
Parameter
CE120
CE121
CE122
CE123
Parameter
UE-68
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Example Value
0 = warning
1 = error [E015]
600v – 820v (400v models)
300v – 410v (200v models)
Example Value
0 ~ 500%
0 ~ 500%
0 ~ 500%
0 ~ 500%
Example Value
2000 (default)