The number the increments per motor revolution is calculated as:
"encoder increments per revolution" * 2
"multiple evaluation"
x "gear factor denominator" / "gear factor nume-
rator"
The number of increments per load revolution for application 2 is equal to:
"encoder increments per revolution" * 2 "
multiple evaluation".
The encoder should always be connected to channel 1, since the software for this channel optimally supports
the motor encoder connection via gear. Parameter Ec.39 „enc. 1 over transmission“ must be set to value „1:
motor encoder“. (For further functions and settings of Ec.39 see chapter 7.11)
Example (application 1):
Encoder channel 1: Encoder with 32 SIN / COS signals per revolution
Gear ratio: Motor to encoder = 3 encoder revolutions correspond to motor revolution = 1 to 3
cS.01: Actual source (= PS.01) = 0 Channel 1
Ec.01: encoder 1 (inc/r) = 32 number SIN / COS signals
Ec.07: Enc. 1 trigger = 9 512-fold evaluation of the analog tracks
Ec.04: Gear 1 numerator = 1000
Gear factor 0.333
Ec.05: Gear 1 denominator = 3000
Ec.39: Encoder 1 over gear = 1 Encoder mounting via gear
The motor shall travel 5.5 revolutions: → 32 x 2
9
x 3000 / 1000 x 5.5 = 270336 increments
Example (application 2):
Encoder channel 1: SSI encoder multiturn with 12bit resolution per revolution and 12bit multiturn
Gear ratio: Motor to encoder = 5 motor revolutions correspond to motor revolution = 5 to 1
cS.01: Actual source (= PS.01) = 0 Channel 1
Ec.01: encoder 1 (inc/r) = 1024 12-bit resolution per revolution
Ec.07: Enc. 1 trigger = 2 Multiple evaluation with SSI encoder always = 2
Ec.53 Encoder 1 SSI multiturn. = 12 12 bit Multiturn-resolution
Ec.04: Gear 1 numerator = 1000 Gear factor 0.333
Ec.05: Gear 1 denominator = 3000
Ec.39: Encoder 1 over gear = 1 Encoder mounting via gear
The load shall travel 5.5 revolutions: → 1024 x 2
2
x 5.5 = 22628 increments
The operation of synchronous motors is not supported and the position normalisation is as follows:
The number of increments per motor revolution is calculated as:
Posi- and synchronous operating
© KEB, 2012-10 COMBIVERT F5-A, -E, -H Page 7.12 - 33
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