Mitsubishi Electric FR-A500 Instruction Manual page 181

Note: 1. This function is only valid in the external operation mode. This function is not activated when "1"
or "2" (remote setting function) is selected for Pr. 59.
2. If the current averaging zone range the constant power region, the output current may increase in
the constant power region.
3. When the average current within the current averaging range is small, the running frequency
increases, which causes the longer deceleration time.
4. The maximum output frequency is 120Hz. If its setting exceeds 120Hz, the output frequency is
120Hz.
5. The high-response current limit function is invalid.
6. Can be activated at every start.
7. When the terminal functions are changed using Pr. 180 to Pr. 186, the other functions may be
affected. Confirm the functions of the corresponding terminals before making settings.
When the load is light, the motor may accelerate suddenly up to 120Hz, causing
hazardous conditions. Provide sufficient interlocks on the machine side before
starting operation.
Set frequency reference table for load torque high-speed frequency control
The following table lists the frequencies set when the load torque high-speed frequency control signal (X19)
and multi-speed terminals (RH, RM, RL) are selected together:
Input Signals
X19 RH RM
Note: 1. Assumes that the external operation command mode is selected and the remote setting function
is not selected.
2. Multi-speeds override the main speeds (across terminals 2-5, 4-5, 1-5).
3. When the 12-bit digital speed input (option FR-A5AX) is selected, the above list is invalid.
(The 12-bit digital speed input has the highest priority.)
4. Jog operation overrides the above list.
Set Frequency
RL
Conforms to load torque high-speed frequency control.
Speed 1 (high speed)................ Pr. 4
Speed 2 (middle speed) ............ Pr. 5
Speed 3 (low speed) ................. Pr. 6
Speed 1 (high speed)................ Pr. 4
Speed 2 (middle speed) ............ Pr. 5
Speed 3 (low speed) ................. Pr. 6
Speed 6..................................... Pr. 26
Speed 5..................................... Pr. 25
Speed 4..................................... Pr. 24
Speed 6..................................... Pr. 26
Speed 4..................................... Pr. 24
Speed 7..................................... Pr. 27
Speed 5..................................... Pr. 25
Speed 7..................................... Pr. 27
Setting using terminal 2, 1, 4, JOG
indicates that the signal is on.
CAUTION
172
PARAMETERS