CONTREX CX-1200 User Manual
Page 342
B - 2
Appendix B: Formulas (continued)
The equations used to scale the Frequency Input 2 signal are given by:
MP-06 = MP-03 * CP-268 * X Seconds
s
CP-267 CP-209
written with parameter text:
Fb EU/Tm = FI2 Hz * EU FI2
1
* X Seconds
Pulses FI2 Time Base
where X = 1 for CP-209 = 0, None
X = 1 for CP-209 = 1, Second
X = 60 for CP-209 = 2, Minute
X = 3600 for CP-209 = 3, Hour
FI2 EU/Tm (MP-06) given in EU/Tm is multiplied by the ratio (given by CP-220) to obtain the desired speed in follower
applications.
MP-04 = MP-03 * 1 Rev * 60 Seconds
CP-266 Minute
written with parameter text:
FI2 RPM = FI2 Hz * 1 * 60 Seconds
PPR FI2 Minute
MP-20 = Follower Counts * X Pulses (CP-265) * CP-268
Count
CP-267
written with parameter text:
Fb Posn = FI2 Cnts * X Pulses (CP-265) * EU FI2
Count Pulses FI2
where
X = 1 for CP-265 = 1, Quad (quadrature mode)
X = 4 for CP-265 = 2, Incr (incremental mode)
Keep in mind that the scaling is included in the ratio calculation for more accurate results. This further justifies using
integers when possible for the scaling numbers.