Yaskawa AC Drive Z1000 AC Drive Bypass for HVAC - Manual (Page 8)

L4-02
Frequency
Detection 2
ON OFF
L4-02
L4-01
L4-01
Output Frequency
or Motor Speed
Figure i.6 Frequency Detection 2 Time Chart
Setting 6: Drive Ready
The output closes when the drive is ready to operate the motor. The terminal will not close under the conditions listed below,
and any Run commands will be disregarded.
• When the power is shut off
• During a fault
• When the internal power supply of the drive has malfunctioned
• When a parameter setting error makes it impossible to run
• Although stopped, an overvoltage or undervoltage situation occurs
• While editing a parameter in the Programming Mode (when b1-08 = 0)
Setting 7: DC Bus Undervoltage
The output closes when the DC bus voltage or control circuit power supply drops below the trip level set in L2-05. A fault in
the DC bus circuit will also cause the terminal set for “DC bus undervoltage” to close.
Status Description
Open DC bus voltage is above the level set to L2-05.
Closed DC bus voltage has fallen below the trip level set to L2-05.
Setting 8: During Baseblock 1 (N.O.)
The output closes to indicate that the drive is in a baseblock state. While in baseblock, output transistors do not switch and no
main circuit voltage is output.
Status Description
Open Drive is not in a baseblock state.
Closed Baseblock is being executed.
Settings B and 17: Torque Detection 1 (N.O., N.C.)
These digital output functions signal an overtorque or undertorque situation to an external device.
Set up the torque detection levels and select the output function from the table below.
Setting Status Description
B Closed
Torque detection 1 (N.O.):
Output current/torque exceeds (overtorque detection) or is below (undertorque detection) the torque value set in
parameter L6-02 for longer than the time specified in parameter L6-03.
17 Open
Torque detection 1 (N.C.):
Output current/torque exceeds (overtorque detection) or is below (undertorque detection) the torque value set in
parameter L6-02 for longer than the time specified in parameter L6-03.
Setting C: Frequency Reference Loss
The output closes when frequency reference loss is detected.
Setting E: Fault
The output closes when the drive faults (excluding CPF00 and CPF01 faults).
i.2 New Parameters and New Monitor
8 YASKAWA TOEP YAISUP 06A YASKAWA AC Drive – Z1000 Bypass Manual Supplement