KB Electronics KBAC-217 Installation And Operation Manual Download Page 21

KBAC SERIES INSTALLATION AND OPERATION MANUAL 

21

11.2 – RESTARTING THE DRIVE AFTER A FAULT HAS CLEARED

1,2

 

The drive monitors five faults: Undervoltage, Overvoltage, Short Circuit at the motor (phase-to-phase), Overload and Phase Loss Detection. 
See Section 13.2 on page 23 for the Status (ST) LED indication. Also see Section 10.3 on page 19 for Automatic Ride-Through or Manual 
Restart selection with Jumper J3. 
 
To restart the drive after a fault has been cleared, use the Start/Stop Switch.

2,3

 If the Start/Stop Switch has been eliminated (bypassed), see 

Section 7.6 on page 17.

4

 The drive can be restarted (after the fault has been cleared) by disconnecting the AC power, and all LEDs are no 

longer illuminated, and then reconnecting the AC power. 
 

Notes: 1.

 For an Overload Fault, be sure the fault has been cleared before restarting the drive. Check the motor current with an AC RMS 

responding ammeter. Also, the CL setting may be set too low. See Section 13.7 on page 30. 

2.

 For an Overvoltage Fault, if the drive is set for 

Automatic Ride-Through, the drive will automatically restart when the AC Line voltage returns to below the specified Overvoltage Trip Point.   

3.

 If the Forward-Stop-Reverse Switch has been installed, it can be used to restart the drive. 

4.

 If the Start/Stop Switch has been eliminated 

(bypassed), the AC Line must be used to restart the drive after an Overload Fault has been cleared. 

 
 
 

12 – TRIMPOT ADJUSTMENTS 

The drive contains trimpots which are factory set for most applications. See Figures 4 – 7 on pages 8 – 11 for the location of the trimpots and 
their approximate factory calibrated positions. Some applications may require readjustment of the trimpots in order to tailor the drive for a 
specific requirement. The trimpots may be readjusted as described in this section. 

 

 

WARNING!

 If possible, do not adjust trimpots with the main power applied. If adjustments are made with the main power applied, an 

insulated adjustment tool must be used and safety glasses must be worn. High voltage exists in this drive. Fire and/or electrocution can result 
if caution is not exercised. The Safety Warnings on page 5 must be read and understood before proceeding. 

 
12.1 – MINIMUM SPEED TRIMPOT (MIN) 

Sets the minimum speed of the motor. The MIN Trimpot is factory set to 0% of frequency setting. 
For a higher minimum speed setting, rotate the MIN Trimpot clockwise. See Figure 33. 

 
 
12.2 – MAXIMUM SPEED TRIMPOT (MAX) 

Sets the maximum speed of the motor. The MAX Trimpot is factory set to 100% of frequency 
setting. For a lower maximum speed setting, rotate the MAX Trimpot counterclockwise. For a 
higher maximum speed setting, rotate the MAX Trimpot clockwise. See Figure 34. 
 

 
12.3 – ACCELERATION TRIMPOT (ACCEL) 

Sets the amount of time for the motor to accelerate from zero speed to full speed. The ACCEL 
Trimpot is factory set to 1.5 seconds. For a longer acceleration time, rotate the ACCEL Trimpot 
clockwise. For more rapid acceleration, rotate the ACCEL Trimpot counterclockwise. See Figure 
35. 
 

Note:

 Rapid acceleration settings may cause the current limit circuit to activate, which will extend 

the acceleration time. 

 
 
12.4 – DECELERATION TRIMPOT (DECEL) 

Sets the amount of time for the motor to decelerate from full speed to zero speed. The DEC/I 
Trimpot is factory set to 1.5 seconds. For longer deceleration time, rotate the DEC/I Trimpot  
clockwise. For more rapid deceleration, rotate the DEC/I Trimpot counterclockwise. See Figure 36. 
 

Application Note:

 On applications with high inertial loads, the deceleration time may automatically  

increase. This will slow down the decrease speed to prevent the bus voltage from rising

 

to the 

Overvoltage Trip point. This function is called Regeneration Protection. It is recommended that for 
very high inertial loads that both the ACCEL and DEC/I Trimpots be set to greater than 10 seconds. 

 
 
12.5 – DC INJECTION BRAKE TRIMPOT (DECEL) 

The drive is factory set for Regenerative Braking (Jumper J7 set to the "RG" position). When the 
drive is set for DC Injection Brake (Jumper J7 set to the "INJ" position), the DECEL Trimpot is used to set the amount of time the DC current is 
applied to the motor. See Figure 37. Also see Section 10.6 on page 20. 

 

FIGURE 37 

DC INJECTION BRAKE TRIMPOT RANGE 

 

 
 
 
 
 
 
 

FIGURE 33 

MINIMIM SPEED TRIMPOT RANGE

 

FIGURE 34 

MAXIMUM SPEED TRIMPOT RANGE

 

FIGURE 35 

ACCELERATION TRIMPOT RANGE

 

FIGURE 36 

DECELERATION TRIMPOT RANGE

Summary of Contents for KBAC-217

Page 1: ...2G and 3G Models3 5 KBAC 24D 27D 29 29 1P 45 48 217 217S 217F 217SF 416 416S 416F 416SF The information contained in this manual is intended to be accurate However the manufacturer retains the right to make changes in design which may not be included herein Notes 1 UL approved as an electronic overload protector for motors 2 Special software is available for PSC motors contact Technical Support 3 ...

Page 2: ...Manual Start Selection J3 19 10 4 Motor Frequency Selection J4 and J5 19 10 4 1 Setting the Drive for 50 Hz or 60 Hz Motor Operation J4 and J5 19 10 4 2 Setting the Drive for Two Times the Rated Motor RPM J4 and J5 19 10 5 Boost Mode Selection J6 20 10 6 Braking Mode Selection J7 20 10 7 Run Fault Output Relay Operation Selection J8 20 10 8 Stop Contact Type Selection J9 20 10 9 Torque Mode Select...

Page 3: ...lection J10 20 32 Switching Frequency and GFCI Selection Third Generation 3G Drives Only J12 20 33 Minimum Speed Trimpot MIN Range 21 34 Maximum Speed Trimpot MAX Range 21 35 Acceleration Trimpot ACCEL Range 21 36 Deceleration Trimpot DECEL Range 21 37 DC Injection Brake Trimpot DECEL Range 21 38 Slip Compensation Trimpot COMP Range 22 39 Current Limit Trimpot CL Range 22 40 I2 t Trip Time vs Moto...

Page 4: ...rminals L1 L2 L3 AC Line input Rated for 208 230 Volt AC Line input only Rated for 2 HP maximum with 1 phase AC Line input and 3 HP maximum with 3 phase AC Line input KBAC 217 217S 217F 217SF Designed to accept 3 phase Terminals L1 L2 L3 AC Line input only Rated for 208 230 Volt AC Line input only KBAC 45 48 416 416S 416F 416SF Designed to accept 3 phase Terminals L1 L2 L3 AC Line input only Rated...

Page 5: ...ntilated 3 phase AC induction motors will overheat if used beyond a limited speed range at full torque Therefore it is necessary to reduce motor load as speed is decreased Note Some fan cooled motors can be used over a wider speed range Consult the motor manufacturer for details CAUTION 1 Some motors have low speed characteristics which cause overheating and winding failure under light load or no ...

Page 6: ...vided for easy installation of accessories Custom software all models can be factory programmed for applications which require special timing PLC functions and GFCI operation 4 1 STANDARD FEATURES Industrial Duty Die Cast Aluminum Case with Hinged Cover Available in dark gray finish or FDA approved white finish Simple to Operate Does not require programming Uses trimpots and jumpers which are fact...

Page 7: ...n Specification Factory Setting 115 Volt AC Line Input Voltage Operating Range Volts AC 115 15 208 230 Volt AC Line Input Voltage Operating Range Volts AC 208 15 230 15 400 460 Volt AC Line Input Voltage Operating Range Volts AC 380 15 460 15 Maximum Load Current Overload for 2 Minutes 150 Switching Frequency kHz Jumper J12 3G Drives Only 1 8 12 8 Signal Following Input Voltage Range2 Volts DC 0 5...

Page 8: ... selection See Section 10 4 on page 19 7 Jumper J12 Switching Frequency and GFCI selection Third Generation 3G drives only See Section 10 11 on page 20 8 Jumper J6 Adjustable Boost selection See Section 10 5 on page 20 9 Jumper J7 Regeneration or DC Injection Braking See Section 10 6 on page 20 10 Jumper J8 Run or Fault Output Relay Operation selection See Section 10 7 on page 20 11 Jumper J9 Norm...

Page 9: ...per J4 Frequency Multiplier selection See Section 10 4 on page 19 8 Jumper J7 Regeneration or DC Injection Braking See Section 10 6 on page 20 9 Jumper J5 Motor Frequency selection See Section 10 4 on page 19 10 Jumper J8 Run or Fault Output Relay Operation selection See Section 10 7 on page 20 11 Jumper J9 Normally Open or Closed Stop Contact selection See Section 10 8 on page 20 12 Jumper J10 Co...

Page 10: ...n 10 5 on page 20 7 Jumper J4 Frequency Multiplier selection See Section 10 4 on page 19 8 Jumper J7 Regeneration or DC Injection Braking See Section 10 6 on page 20 9 Jumper J5 Motor Frequency selection See Section 10 4 on page 19 10 Jumper J8 Run or Fault Output Relay Operation selection See Section 10 7 on page 20 11 Jumper J9 Normally Open or Closed Stop Contact selection See Section 10 8 on p...

Page 11: ...MIN Acceleration ACCEL Deceleration DECEL DC Injection Brake DECEL Boost BOOST Current Limit CL Jog JOG Slip Compensation COMP See Section 12 on pages 21 and 22 8 Selectable Jumpers Motor Horsepower J2 Automatic Ride Through or Manual Start J3 Frequency Multiplier J4 Motor Frequency J5 Fixed or Adjustable Boost J6 Regeneration or DC Injection Braking J7 Run or Fault Output Relay Operation J8 Norma...

Page 12: ...care should be taken to avoid extreme hazardous locations where physical damage can occur When mounting the drive in an enclosure the enclosure should be large enough to allow for proper heat dissipation so that the ambient temperature does not exceed 40 C 104 F at full rating See Figures 8 10 on pages 12 14 WARNING Do not use this drive in an explosion proof application Be sure the control is sec...

Page 13: ...KBAC SERIES INSTALLATION AND OPERATION MANUAL 13 FIGURE 9 KBAC 27D 29 29 1P 45 48 MECHANICAL SPECIFICATIONS Inches mm Tighten these screws in the sequence shown to 12 in lbs 14 kg cm ...

Page 14: ...KBAC SERIES INSTALLATION AND OPERATION MANUAL 14 FIGURE 10 KBAC 217 217S 217F 217SF 416 416S 416F 416SF MECHANICAL SPECIFICATIONS Inches mm ...

Page 15: ...he cover making sure that the wires do not get caught or crimped as the cover is closed Tighten the four screws so that the gasket is slightly compressed The recommended tightening torque is 12 in lbs 14 kg cm do not overtighten See Figures 8 10 on pages 12 14 for the tightening sequence Application Note To avoid erratic operation do not bundle the AC Line and motor wires with each other or with w...

Page 16: ...Ground Wire Earth to the Green Ground Screw The Ground Screws are located next to Terminal Block TB1 See Figures 11 13 on pages 15 and 16 7 4 REMOTE MAIN SPEED POTENTIOMETER CONNECTION The drive is supplied with a prewired Main Speed Potentiometer mounted on the front cover To operate the drive from a remote potentiometer 5 kΩ remove the white orange and violet potentiometer leads from Terminals P...

Page 17: ...tiometer setting when the AC Line is applied 7 7 VOLTAGE FOLLOWING CONNECTIONS An isolated 0 5 Volt DC analog signal input can also be used to control motor speed in lieu of the Main Speed Potentiometer The drive output will linearly follow the analog signal input Wire the signal input positive lead to Terminal P2 and the negative lead to Terminal P1 With external circuitry a 0 10 Volt DC analog s...

Page 18: ...atic ramping then the hi pot output must be manually increased to the test voltage and then manually reduced to zero This procedure must be followed for each machine to be tested A suggested hi pot tester is Slaughter Model 2550 CAUTION Instantly applying the hi pot voltage will cause irreversible damage to the drive which will void the warranty FIGURE 21 TYPICAL HI POT TEST SETUP AC Line Input 9 ...

Page 19: ...seconds the drive will shut down and then ride through and automatically return to the set frequency See Figure 24 If Jumper J3 is set to the M position the drive will have to be manually restarted for a momentary power loss using the Start Stop Switch Also see Section 13 2 on page 23 for the Status ST LED indication On KBAC 24D 217 217S 217F 217SF 416 416S 416 416F 416SF Jumper J3 is labeled AUTO...

Page 20: ...LY Jumper J12 is factory set to the 8K position for a switching frequency at the motor of 8 kHz For 12 kHz switching frequency set Jumper J12 to the 12K position This jumper also allows the drive to be used on standard G1 position or sensitive G2 position GFCIs See Figure 32 Note GFCI operation may increase audible motor noise FIGURE 32 SWITCHING FREQUENCY AND GFCI SELECTION KBAC 24D 27D 29 29 1P ...

Page 21: ...not exercised The Safety Warnings on page 5 must be read and understood before proceeding 12 1 MINIMUM SPEED TRIMPOT MIN Sets the minimum speed of the motor The MIN Trimpot is factory set to 0 of frequency setting For a higher minimum speed setting rotate the MIN Trimpot clockwise See Figure 33 12 2 MAXIMUM SPEED TRIMPOT MAX Sets the maximum speed of the motor The MAX Trimpot is factory set to 100...

Page 22: ...tor is properly protected with the I2 t feature it is required that the CL Trimpot be set for 160 of the motor nameplate rated current as described below 12 8 BOOST TRIMPOT BOOST The drive is factory set for Fixed Boost Jumper J6 set to the FIX position When the drive is set for Adjustable Boost Jumper J6 set to the ADJ position the BOOST Trimpot can be used to adjust the amount of boost voltage t...

Page 23: ...ource and the drive Mounts on the drive s PC board with four snap ins 2G 9600C 9600C 9600C 9600C 9600C 9600C 3G1 8890 8890 8890 8890 8890 8890 8890 Auto Manual Switch Kit When used with the Signal Isolator it selects remote process signal or the Main Speed Potentiometer Mounts on the enclosure cover and is supplied with a switch seal to maintain liquidtight integrity 9481 9481 9481 9481 9481 9481 ...

Page 24: ...ion and removal inconvenience or consequential damage including injury to any person caused by items of our manufacture or sale Some states do not allow certain exclusions or limitations found in this warranty and therefore they may not apply to you In any event the total liability of KB Electronics Inc under any circumstance shall not exceed the full purchase price of this product Rev 2 2000 COPY...

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