WEG CFW-11 Programming Manual page 58

Programming Basic Instructions
In order to indicate values in other units, use the following formulas:
Where,
Reference = Speed reference, in rpm;
Speed = Actual speed, in rpm;
Synchronous Speed = 120 x Motor Rated Frequency (P0403)/Nr. of Poles;
Nr. of Poles = 120 x P0403/ Motor Rated Speed (P0402), and can be equal to 2, 4, 6, 8 or 10.
Example:
If Speed = Synchronous Speed = 1800,
P0208 = 900,
P0212 = 1 (wxy.z), then
P0209 – Reference engineering Unit 1
P0210 – Reference engineering Unit 2
5
P0211 – Reference engineering Unit 3
Adjustable
Range:
Proprieties:
Access groups
via HMI:
Description:
Those parameters are used to adjust the unit of the variable one wants to indicate at parameters P0001 and P0002.
The characters "rpm" can be replaced by those wanted by the user, for instance, L/s (length/second), CFM (cubic
feet per minute), etc.
The reference engineering unit is composed by 3 characters: P0209 defines the leftmost, P0210 the center and
P0211 the rightmost character.
The available characters correspond to the ASCII code from 32 to 127.
5-6
P0002 =
Synchronous Speed x (10)
P0001 =
P0002 =
32 to 127
01 PARAMETER GROUPS
30 HMI
Speed x P0208
P0212
Reference x P0208
Synchronous Speed x (10)
P0212
1800 x 900
= 90.0
1800 x (10)
1
Factory P0209=114 (r)
Setting: P0210=112 (p)
P0211=109 (m)