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KB Electronics 8821, Installation And Operating Instructions Manual, Page: 17 / 20

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KB Electronics 8821 Installation And Operating Instructions Manual Download Page 17

 

Summary of Contents for 8821

Page 1: ... 6 7 8 9 10 11 12 13 TB1 CL CL IR COMP RESP MAX SPD OFFSET FWD FWD TCL REV REV EN EN PWR ON CL ACCEL FWD ACCEL REV DB J1 NLT J8 S LT EARTH GND R33 See Safety Warning on Page 1 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 A COMPLETE LINE OF MOTOR DRIVES ...

Page 2: ...ET and TCL trimpots have been moved to be aligned with the other trimpots The General Performance Specifications Electrical Ratings Mechanical Specifications and Connection Diagrams have not changed See the figure below for the Trimpot and Jumper location changes Model KBRG 255 SMT Logic Board Layout ...

Page 3: ... Information 7 5 Field Connections 7 6 Control State vs Relay Contact State 10 7 Current Limit Timer Settings 13 8 Parts List Power Board 13 9 Parts List Logic Board 15 16 FIGURES 1 Control Layout 3 2A Linear Torque Curve 5 2B Non Linear Torque Curve 5 3 AC Line and Armature Connection 7 4A Full Voltage Field 7 4B Half Voltage Field 7 5 Mechanical Specifications 8 6 Main Speed Potentiometer Connec...

Page 4: ...ple drives from a non isolated signal source ii SAFETY WARNING PLEASE READ CAREFULLY This product should be installed and serviced by a qualified technician electrician or electrical maintenance person familiar with its operation and the hazards involved Proper installation which includes wiring mounting in proper enclosure fusing or other overcurrent protection and grounding can reduce the chance...

Page 5: ...w all instructions carefully Fire or electrocution can result due to improper use of this product Read Safety Warning TABLE 1 ELECTRICAL RATINGS Model Part No Input Voltage VAC Max AC Current RMS Output Voltage VDC Max DC Output Current ADC Max Horsepower HP KW KBRG 255 8821 230 38 0 180 25 5 3 8 TABLE 2 GENERAL PERFORMANCE SPECIFICATIONS Parameter Specification Factory Setting AC Line Input Volta...

Page 6: ...ing of Jumpers and Approximate Trimpot Settings M1 M2 L1 L2 F F TB1 TB2 F1 1 2 3 4 5 6 7 8 9 10 11 12 13 TB1 CL CL IR COMP RESP MAX SPD OFFSET FWD FWD TCL REV REV EN EN PWR ON CL ACCEL FWD ACCEL REV DB J1 NLT J8 S LT EARTH GND R33 DWG C3900 2 00992 ...

Page 7: ...operation is regeneration the applied load is in the same direction as the direction of motor rotation Table 3 summarizes the different modes of regen operation TABLE 3 SUMMARY OF CONTROL OPERATION Quadrant Type of Operation Motor Rotation Direction Motor Torque Direction Applied Load Direction I Motoring CW CW CCW II Regeneration CCW CW CCW III Motoring CCW CCW CW IV Regeneration CW CCW CW B Torq...

Page 8: ...ed refer to fig 1 p 3 Bold indicates Factory Setting See sec II p 4 for J7 and J8 settings A J4 Tach generator Voltage Note Selection of the jumper position is not required if armature feedback is used Place J4 jumper in the position 7V 20 30V 50V that corresponds to the tach generator voltage in Volts KRPM Note The tach voltage jumper position is based on motor speed of 1 800 RPM ...

Page 9: ... Limit NTCL In this mode the drive will reach preset Current Limit during overload and stay at that level until drive is turned off or fuse blows If Non Timed CL is desired move jumper J6 from the factory set TCL position to the NTCL position IV MOUNTING Mount the KBRG 255 in a vertical position connection terminals in down or up position on a flat surface free of moisture metal chips or corrosive...

Page 10: ...tors with 100VDC fields connect field to terminals F and L1 see fig 4A and 4B See table 5 for summary of Field Connections CAUTION Shunt Wound motors may be damaged if field remains connected without motor rotating for an extended period of time To remove field voltage from motor disconnect AC line FIG 4A FULL VOLTAGE FIELD FIG 4B HALF VOLTAGE FIELD TABLE 5 FIELD CONNECTIONS Shunt Wound Motors Onl...

Page 11: ...8 FIG 5 MECHANICAL SPECIFICATIONS INCHES mm ...

Page 12: ...s 8 and 9 are joined control is in ENABLE state When terminals 8 and 9 are open control is in INHIBIT state See fig 7B p 10 IMPORTANT If Enable is not used a jumper must be installed between terminals 8 and 9 or control will not operate See Safety Warning on page 1 H Start Stop Circuit A standard 3 wire start stop circuit is provided terminals 5 6 and 7 This allows a remote momentary 2 button star...

Page 13: ...mperage fuse 150 amp Littelfuse 3AG normal blo or equivalent which protects the control transformer and other components against catastrophic failure Under normal circumstances this fuse should never blow See fig 1 p 3 for location The KBRG 255 does not contain AC line or armature fusing It is recommended that a 40 Amp fuse or circuit breaker be installed on each AC line conductor not at ground po...

Page 14: ...es the amount of time it takes the control voltage to reach full output in the reverse direction and the time it takes for the control voltage in the forward direction to reach zero output REV ACCEL is the Forward Decel The FWD and REV ACCEL trimpots are factory adjusted to 1 second The acceleration times are adjustable to a maximum of 15 seconds See fig 8 for graphic representation of ACCEL Note ...

Page 15: ...series with armature lead Lock shaft of motor iii Apply power Rotate CL trimpot CW until desired CL setting is reached factory setting is 1 5 times rated motor current Be sure control is in Forward direction for FWD CL trimpot adjustment and likewise with REV CL WARNING Do not leave motor shaft locked for more than 2 3 seconds to prevent motor damage CAUTION Adjusting the CL above 150 of motor rat...

Page 16: ...ime Secs Trimpot Position 1 Full CCW 8 Midway 15 Full CW IX FUNCTION INDICATOR LAMPS A LED 1 Power On PWR ON Indicates that the drive is energized with the AC line B LED 2 Current Limit CL Indicates that the drive is in Current Limit If set in the timed Current Limit mode J6 set to TCL and has timed out the LED 2 will remain ON until the drive is restarted C LED 3 Forward Enable FWD EN Indicates t...

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Page 20: ...tee expressed or implied and we are not responsible for any expense including installation 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 so that they may not apply to you In any event KB s total liability under all circumstances shall not e...

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