Frick Vyper 700 - Figure 47 - High Motor Amps; Figure 48 - Ex.1 Motor Amps Safety Calculation Table; Figure 49 - Ex. 1 Motor Amp Setpoint Calculations (Table A); Figure 50 - Ex. 2 Motor Amps Safety Calculation Table

VYPER
™
VARIABLE SPEED DRIVE
OPERATION
100-210 IOM (JUL 09)
Page 46
Step 3: (See Table 17 or 18) Use High Motor Amps Calcu-
lations Table A or B based on the following:
• IfvalueofLine3islessthanthevalueofLine6,use
Table A (Table 17) for amp calculations.
• IfvalueofLine3isgreaterthanvalueofLine6,use
Table B (Table 18) for amp calculations.
Table A - High Motor Amp Setpoint Calculations
Parameter Equation Value
Load Inhibit =Applied Motor FLA x 1.1
Force Unload =Applied Motor FLA x 1.12
Warning =Applied Motor FLA x 1.13
Shutdown =Applied Motor FLA x 1.15
Table 17 – High Motor Amp Setpoint Calculations (Table A)
Table B - High Motor Amp Setpoint Calculations
Parameter Equation Value
Load Inhibit = Vyper Amp Limit x 0.97
Force Unload = Vyper Amp Limit
Warning = Vyper Amp Limit x 1.01
Shutdown = Vyper Amp Limit x 1.03
Table 18 – High Motor Amp Setpoint Calculations (Table B)
Step 4: (See Figure 46) Program the calculated values for
High Motor Amps. Set the delay for Warning and Shutdown
setpoints for five (5) seconds. Refer to the examples provided
as necessary.
Use the cursor arrow and [Tab] keys to navigate between set-
points. Use the keypad to program the setpoints as calculated.
Press the [Enter] key to accept the value for each field.
Figure 47 - High Motor Amps
High Motor Amp Limit Examples
Example 1 (See Figures 48 and 49) What are the High Motor
Amp setpoints if a 700 HP Vyper
™
is to drive a motor with 1.15
SF and a 679 Amp FLA? Using these values, determine wheth-
er Table A or Table B should be used to calculate the setpoints.
Line Parameter Value
1 Applied Motor FLA 679 A
2 Applied Service Factor 1.15
3 Multiply (Line 1 x Line 2) 780 A
4 HP rating of Vyper Drive 700 HP
5 Vyper Amp Limit
If Line 4 is 700/572 HP, value is 880 A
If Line 4 is 912/752 HP, value is 1180 A
880 A
6 Multiply Line 5 x 1.05 924 A
Figure 48 - Ex.1 Motor Amps Safety Calculation Table
The value of Line 3 is 780 Amps; this is less than Line 6
Value of 924 Amps. Therefore, use Table A (Table 17) for
High Motor Amp setpoint calculation. Refer to Figure 47 for
the locations to enter calculated values.
Table A - High Motor Amp Setpoint Calculations
Parameter Equation Value
Load Inhibit =Applied Motor FLA x 1.1 858 A
Force Unload =Applied Motor FLA x 1.12 873 A
Warning =Applied Motor FLA x 1.13 881 A
Shutdown =Applied Motor FLA x 1.15 897 A
Figure 49 - Ex. 1 Motor Amp Setpoint Calculations (Table A)
Example 2 (See Figures 50 and 51) What are the High
Motor Amp setpoints if a 912 HP Vyper
™
will drive a motor
with 1.15 SF and a 1082 Amp FLA? Using these values,
determine whether Table A or Table B should be used to
calculate the setpoints.
Line Parameter Value
1 Applied Motor FLA 1082 A
2 Applied Service Factor 1.15
3 Multiply (Line 1 x Line 2) 1245 A
4 HP rating of Vyper Drive 912 HP
5 Vyper Amp Limit
If Line 4 is 700/572 HP, value is 880 A
If Line 4 is 912/752 HP, value is 1180 A
1180 A
6 Multiply Line 5 x 1.05 1239 A
Figure 50 - Ex. 2 Motor Amps Safety Calculation Table
The value of Line 3 is 1245 Amps; this is greater than Line
6 value of 1239 Amps. Therefore, use Table B (Table 18) for
High Motor Amp setpoint calculation. Refer to Figure 47 for
the locations to enter calculated values.
Table B - High Motor Amp Setpoint Calculations
Parameter Equation Value
Load Inhibit = Vyper Amp Limit x 0.97 1144 A
Force Unload = Vyper Amp Limit 1180 A
Warning = Vyper Amp Limit x 1.01 1191 A
Shutdown = Vyper Amp Limit x 1.03 1215 A
Figure 51 - Ex.2 Motor Amp Setpoint Calculations (Table B)