Cutler-Hammer - Eaton Canada
Cutler-Hammer - Eaton Canada
Cutler-Hammer - Eaton Canada
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AF93/IS903 Parameter Descriptions<br />
USING THE PARAMETERS<br />
Jump Speeds 1 through 3<br />
Specifications<br />
Parameter Number: 34 to 36<br />
Mnemonic: JUMP SPEED x LO<br />
where ÒxÓ is a value of 1 to 3<br />
Range of Adjustment: Minimum Speed to<br />
Maximum Speed<br />
Run Locked?: No<br />
Factory Setting: 0<br />
These parameters set jump speeds which are<br />
used to avoid operating at speeds that create<br />
problems with mechanical resonance. The jump<br />
speeds, combined with Jump Width (parameter<br />
37), create frequency windows. The drive can<br />
accelerate or decelerate smoothly through the<br />
windows, but will not stop at any frequency within<br />
a window. Jump frequency windows are<br />
illustrated in the graph shown below.<br />
Jump Width<br />
Specifications<br />
Parameter Number: 37<br />
Mnemonic: JUMP WIDTH<br />
Range of Adjustment: 0 to Maximum Speed<br />
Run Locked?: No<br />
Factory Setting: 0<br />
This parameter allows you to define the band<br />
width of frequencies around each jump speed<br />
where the drive will not operate continuously.<br />
AF93/IS903 Instruction Manual<br />
4-22<br />
hz<br />
133<br />
106<br />
79<br />
53<br />
26<br />
0<br />
0<br />
Jump<br />
Width<br />
Jump Speed 1<br />
Jump Speed 2<br />
Jump<br />
Speed 3<br />
26 53 79 106 133 hz<br />
ETN-JUMP SPD<br />
Typical Jump Speed Graph<br />
DC Injection Braking<br />
Specifications<br />
Parameter Number: 38<br />
Mnemonic: DC BRAKE TIME<br />
Range of Adjustment: 0 to 16 sec<br />
Run Locked?: No<br />
Factory Setting: 0.0 sec<br />
This parameter defines how long in seconds that<br />
DC injection braking lasts. When DC current is<br />
injected into the windings of an induction motor,<br />
the motor acts as a brake. Approximately 20%<br />
braking torque is injected for the period of time<br />
set by this parameter when the motor speed<br />
drops below 5 Hz.<br />
Relay 1 and<br />
Relay 2<br />
Specifications<br />
Parameter Number: 39 and 40<br />
Mnemonic: RELAY 1 or RELAY 2<br />
Range of Adjustment: One of the following eight<br />
functions can be selected<br />
for each of the two relays:<br />
ÒREADYÓ, ÒRUNÓ,<br />
ÒREVERSEÓ, ÒKEYPADÓ,<br />
ÒAT SPEEDÓ, ÒZERO<br />
SPEEDÓ, ÒLOAD LIMITÓ,<br />
ÒOVERLOAD WARNINGÓ<br />
Run Locked?: Yes<br />
Factory Setting: Relay 1: ÒRUNÓ<br />
Relay 2: ÒAT SPEEDÓ<br />
RELAY 1 defines the relay function when drive is<br />
in RUN mode. RELAY 2 defines the relay<br />
function when drive is Òat speedÓ.
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