SHENZHEN ENCOM ELECTRIC TECHNOLOGIES CO. enc eds800-2s0002n User Manual page 104

The inverter will lose thermal relay protection function when a piece of inverter drive
multiple motors in parallel. Please assemble heat protection relay at input side of each
motor to protect them effectively.
note
time
[F9.04]=50%
1 minute
55%
Fig.6-38 electronic thermal relay protection Fig.6-39 overload alarm
F9.05 overload alarm checkout level
F9.06 overload alarm delay time
If output current exceeds electric level set by parameter F9.05 continuously，
open collector outputs effective signal(refer to Fig.6-39 and interrelated description
of parameter F5.10 ) after delay time set by F9.06 passed.
F9.07 Overvoltage stall selection
F9.08 Stall overvoltage point
0: banned
1: allowed
Actual descending rate of motor speed may be lower than that of output
frequency due to effect from load inertia when the inverter is in decelerating run
process, here the motor will feed electric energy back to inverter which will make
DC bus-bar voltage of the inverter increase, overvoltage protection will takes place
if not take steps. Overvoltage stall protection function, indicates that output
frequency of the inverter stops descending if bus-bar voltage detected during run
process exceed stall voltage point defined by F9.08 (relative to standard bus-bar
voltage) and the inverter continue to implement decelerating run when bus-bar
voltage detected again is lower than stall overvoltage point. As shown in Fig. 6-40.
EDS800 series Service Manual
[F9.04]=100%
current
110%
150% (G)
105%
120% (P)
Alarm level
[F9.05]
Yn
high
[F9.06]
Range：20－200(％)
Range：0.0－20.0S
Range：0, 1
Range：120－150(%)
99
Output current
high
time
[F9.06]
130(%)
5.0S
1
140(%)