RS V10752 Hoja De Instrucciones página 5

V10752
Switch 4
The above example (default) shows the amplifier using velocity control
with normal speed scaling, not requiring enable or limit signals.
The personalisation header is a removable device, into which resistors
and capacitors may be soldered to set up parameters of the drive. If a
drive is being replaced then this header may be removed and
transplanted into the new drive.
1
RTacho
2
LKArm
3
CInt
4
CDeriv
5
RArm
6
RTConst
7
RIRatio
8
RIPeak
RTacho is a resistor for scaling the tachometer feedback. Do not fit if
not using tachometer feed back. The value of RTacho may be
calculated by the following formula:
RTacho = (400 * Vm * Ke) - 2000Ω
where Vm is the maximum speed in thousands of RPM.
(rpm/1000)
Ke is the voltage constant of the tachometer in volts per
thousand rpm (V/1000rpm)
LKarm is a link or 0Ω resistor that must be fitted to use armature
voltage feedback Do not fit RTacho if using this feedback mode.
CInt is an extra capacitor that may be fitted to increase the integration
function. A link may also be fitted to defeat the integration function for
use with positional controllers.
CDeriv is an extra capacitor that may be fitted to increase the
derivative function.
4
Velocity/Torque Control Selection.
Torque control (using
Required Current as input)
Velocity control
16
Tacometer feed back scaling resistor
15
Link for Armature Voltage Feedback
14
Add or defeat Integration capacitor
13
Add or defeat Derivative capacitor
12
Armature feedback scaling resistor
11
Time constant reducing resistor
10
Nominal/peak current ratio resistor
9
Peak current resistor
RArm is a resistor for scaling the armature feedback. The link LKArm
must be fitted for this to have an effect.
The value of RArm may be calculated by the following formula:
RArm = 260 * Vm * KeΩ
where Vm is the maximum speed in thousands of RPM.
(rpm/1000)
Ke is the voltage constant of the motor in volts per
thousand rpm (V/1000rpm)
RTConst is a resistor that may be fitted to reduce the current limit time
constant. Fitting a 220KΩ resistor will halve the time constant.
RIRatio is a resistor to set the ration between the nominal current limit
to the peak current limit. The nominal current limit is therefore also
dependant on the peak current limit set by RIPeak. Care must be taken
not to exceed the thermal limitations of the motor or amplifier. The value
of RI Ratio may be calculated by the following formula:
RIRatio = 15000/[Inom/Ipeak)
where Inom is the required nominal current limit. (A) Ipeak is the
peak current limit set by RIPeak.(A)
Therefore (Inom/Ipeak) is the ratio between the nominal
and peak current limits.
Inom/Ipeak ratio: 1/3 (35%)
RIRatio: not fitted
RIPeak is a resistor to set the peak current limit. The nominal current
limit is a ratio of the peak current limit and therefore is also affected by
RIPeak. Care must be taken not to exceed the thermal limitations of the
motor or amplifier.
The value of RIPeak may be calculated by the following formula:
RIPeak = (4700 * Ipeak) / (4.2 - Ipeak)Ω
where Ipeak is the required peak current limit. (A)
Ipeak: 4A 3A
RIPeak 100K 12K
The default components for the motor/tacho 263-6005 are:
RIPeak = 12KΩ - Peak current limit = 3A
RIRatio = not fitted - Ratio = 1/3
Rtacho = 680Ω
The default components for the motors 263-5995 and 263-6011 are:
RIpeak = 12KΩ - Peak current limit = 3A
RIRatio = not fitted - Ratio = 1/3
nominal current limit = 1A
LKArm= Link -Armature voltage feedback
RArm = 6K2Ω
2
-0.125]Ω
1/2(50%) 2/3(66%) 3/4(75%)
120K 47K 33K
2A 1A 0.5A
4K3 1K5 680Ω
nominal current limit = 1A