User Manual Manual

Setting the Operational Parameters 5-4
Publication 825-UM001B-EN-P January 2001
Operating Parameters
Table 5.D Cat. No. 825-M… Operating Parameters
➊ If Primary CT #1 is set to “no”, the programming menu skips to parameter Locked Rot Curr.
➋ If Thermal Warning is set to “off”, the programming menu skips to parameter Asymmetry Trip.
Group
Required
Option Card
Cat. No.
LCD
Setting
Range
Description
Main settings
——Mode: Set parameters
— 0.5…2 000 Rated motor current in A
— No/Yes ➊
Use of the primary
transformer
— 1…2 000
Current ratio of the primary
current transformer e.g.
500 A/5 A, setting = 100
800 A/5 A, setting = 160
— 2.5…12
Locked rotor and starting
current in …
e
— 1…600
Maximum permissible
locked-rotor time of motor
from cold
Thermal overload
—
Main
relay/no
relay
Thermal trip, motor
Choice between main
output relay and no relay
— On/Off ➋
Thermal warning (motor
temp) On/Off
— 50…99
Pickup value for thermal
warning temperature rise as
percent of thermal
utilization
—
All except
main relay
Thermal warning
Assignment of output relay
SET VALUES
FULL LOAD CURR
20 A
PRIMARY C.T. #1
NO
PRIM. C.T. RATIO
1
LOCKED ROT CURR
6 x Ie
LOCKED ROT TIME
10 sec
THERMAL TRIP
MAIN RELAY
THERMAL WARNING
OFF
TH WARNING LEVEL
75 %
TH WARNING
ALARM RELAY