4. Programming
4-5
Function
Display
Description
Default
Range
Unit
4-4. Calibration block Parameteres
-CAL-
Line Voltage setting
Voltage Calibration
Unit Frame
Current Calibration
Motor Rated Current
Overload Protection
Service Factor
U
x x x
t
x x x
U F
x
m
x x x
N
x x x
o
x x x
f
x x x
U
4 0 0
t
4 0 0
U F
0
m
0 0 0
N
1 0 0
o
C 1
f
1 0 0
Line Voltage from 100 to 500V. Set rated value
Setting of this parameter allows better accuracy in moni-
toring or voltage protections. (Check the voltage calibra-
tion procedure)
Unit frame rating (F,G,H,...X)
Setting 0 disables calibration
Setting of this parameter allows better accuracy in moni-
toring or current protections. (Check the current calibra-
tion procedure)
100 x I motor/ I unit ratio
When this parameter is adjusted at a value higher than
105% the overload protection curve is automatically ad-
justed to Class 10. "C1", or to Nema 20 "N2"
Selects either the following overload curves
OFF:
Overload protection disabled
(external overload relay must be used)
N1:
Nema 10
N2:
Nema 20
N3:
Nema 30
C1:
Class 10
C2:
Class 20
Allows motor service factor. Applicable for Nema ratings
100-500
000-600
F, G, H, I, J, K, L,
M, N, Q, R, ...X
000-1000
040-120
OFF
N1, N2, N3,
C1, C2
100-130
V
V
-
A
%
-
%
(*) Voltage calibration procedure
When the unit is installed on site or after PCB's replacement the voltage measurements may have accuracy of 10%. To improve the Voltage
measurement accuracy up to 3% proceed as follow.
1. Switch on the ASTAT and measure the RMS voltage on phases 1L1-3L2 using a calibrated voltmeter
2. Search the parameter "txxx", set the voltage measured and save this value by the
key. It is not necessary to rewrite the E2PROM
to make permanent the new setting, the ASTAT plus does this automatically.
NOTE: Set real voltage measured while ASTAT is Power ON. DO NOT enter motor nameplate rating
3. Once the ASTAT has been calibrated, this operation does not need to be repeated. Note however that the parameter "txxx" will show
the latest entry, which may differ from the actual voltage value.
(*) Current calibration procedure
When the unit is installed on site or after PCB's replacement the current measurements may have accuracy of 10%. To improve the Current
measurement accuracy up to 3% proceed as follow.
1. Search parameter "UF x" and enter the right ASTAT's frame type letter. ("F", "G", "H", ..etc.)
2. Start the motor, and measure the rms motor current using a calibrated Ammeter.
This measurement must be done after complete the starting, once the motor current has been stabilized.
3. Search the parameter "mxxx", set the current measured and save this value by the enter's keypad key. It is not necessary to rewrite the
E2PROM to make permanent the new setting, the ASTAT Plus do this automatically.
NOTE: Set real current measured while motor is running. DO NOT enter motor nameplate current rating
4. Once the ASTAT has been calibrated, this operation does not need to be repeated. Note however that the parameter "mxxx" will show
the latest entry, which may differ from the actual current value.
