5-2
Calibration
Motor Data Entry (cont.)
①
The controller’s programming system will not allow both Motor Code Letter and LRC Ratio to be
programmed.
Table 5.A Motor Codes
①
Locked kVA per horsepower range includes the lower figure up to, but not including,
the higher figure. For example, 3.14 is designated by letter A and 3.15 by letter B.
Parameter Option Display
Motor Code Letter
①
Enter the value from the motor’s
nameplate. If the motor nameplate
does not provide this, consult the motor
manufacturer. See Table 5.A for code
letter definitions.
A–V
LRC Ratio
①
IEC motors do not provide a motor code
letter. Consult the motor manufacturer
for the motor’s locked rotor current/full
load current ratio.
0.0–19.9
Converter Rating
If a Bulletin 825 converter module will
provide current feedback to the
controller, enter the converter’s rating to
ensure proper current measurement
scaling.
None, 20, 180,
630
CT Ratio
For controllers using external current
transformers with the 20A converter
module for current feedback, current
transformers with 5A secondaries are
required. Enter the current transformer
ratio in this parameter.
5 through
1200:5
MOTOR CODE LETTER
#
LRC RATIO
##.#
CONVERTER RATING
###
CT RATIO
#### : 5
Letter
Designation
kVA/HP
①
Letter
Designation
kVA/HP
①
A 0–3.15 L 9.0–10.0
B 3.15–3.55 M 10.0–11.2
C 3.55–4.0 N 11.2–12.5
D 4.0–4.5 P 12.5–14.0
E 4.5–5.0 R 14.0–16.0
F 5.0–5.6 S 16.0–18.0
G 5.6–6.3 T 18.0–20.0
H 6.3–7.1 U 20.0–22.4
J 7.1–8.0 V 22.4 and up
K 8.0–9.0
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