Delta EB3000 Series User Manual page 229

Chapter 8 Descriptions of Parameter SettingsEB3000
Emergency Power Supply (EPS)
02-20
Emergency Power (EPS) ON Operation Direction

VF
Control Mode
Settings
 Pr.02-20 is enabled when the external terminal detects the emergency power signal EPS
(MI=43).
 When you set Pr.02-20 to 1 and a forward/reverse run command is given, the drive checks for
the elevator loading and operates in the power regeneration direction (the motor is in power
generating status). The drive uses and operates in the direction that was detected as its power
regeneration direction. For safety, the drive does not operate in user command direction to
prevent emergency power voltage drop (EPS).
 When you set Pr.02-20 to 4 (motor with gear box):
1. When the normal mode runs to the largest power factor angel, the results are saved in
Pr.02-26.
2. Compare the power factor angle detected by the power generation direction with Pr.02-25
setting value, if the value is larger than Pr.02-25, the current direction is saved in Pr.02-27.
3. When in emergency power mode, the drive runs according to the Pr.02-27 operation
direction.
 VF and SVC control modes: In the time setting in Pr.02-24, the drive detects the elevator
loading status by performing forward/reverse run. Then the elevator operates in the power
regeneration direction (the motor is in power generating status). Refer to the Auto-detection
Timing Diagram 1 and 2 below for details.
SVC FOCPG
0: Run according to current command
1: Run according to the operation direction of power generation mode, and
execute the power generation direction detection when in power generation
mode.
2: After determining the power generation direction, the host controller sends
a running direction command. (When at STOP, the direction of power
generation mode (MO = 32) confirms and the direction of power generation
mode does not remain.) Execute the power generation direction detection
every time.
3: After determining the power generation direction, the host controller sends
a running direction command. (When at STOP, the direction of power
generation mode (MO =32) confirms and the direction of power generation
mode remains.) Execute the power generation direction detection one time.
4: Run according to the operation direction of power generation mode, and
execute the power generation direction detection when in normal mode.
FOCPM
8-02-6
Default: 0