INSTALLATION AND OPERATING INSTRUCTIONS REGENERATIVE DRIVE MODEL KBRG-255 (5HP) KB Part No. 8821 FULL WAVE • 4 QUADRANT FWD EN MAX IR REV SPD RESP COMP CL FWD REV ACCEL ACCEL DB S/LT NLT OFFSET FWD CL TCL J8 REV EN PWR ON CL R33 F1 TB1 1 2 3 4 5 6 7 8 9 10 11 12 13 (EARTH) TB1 GND F+ F- TB2 L1 L2 M1 J1 M2 See Safety Warning on Page 1 The information contained in this manual is intended to be accurate.
TABLE OF CONTENTS Section Page i. Simplified Setup and Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ii. Safety Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 I. General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 II. Setting Mode of Drive (Speed or Torque Control) . . . . . . . . . . . . . . . . . . . .
! i. KBRG-255 SIMPLIFIED OPERATING INSTRUCTIONS IMPORTANT – You must read these simplified operating instructions before you proceed. These instructions are to be used as a reference only and are not intended to replace the detailed instructions provided herein. You must read the Safety Warning before proceeding. 1. CONNECTIONS. A. AC Line – Wire AC line voltage (230VAC ±10%, 50/60 Hz). Connect ground wire (earth) to green ground screw. B. Motor. 1. Permanent Magnet (PM Type).
This product complies with all CE directives pertinent at the time of manufacture. Contact factory for detailed installation instructions and Declaration of Conformity. Installation of a CE approved RFI filter is required. Additional shielded motor cable and/or AC line cables may be required along with a signal isolator (SI-4X, KB P/N 8801 or equivalent). I. GENERAL INFORMATION.
FIG.
II. SETTING MODE OF DRIVE (SPEED OR TORQUE CONTROL). The KBRG-255 can be operated as a speed control or torque control by setting the position of jumper J7. The main speed potentiometer controls the magnitude of the mode selected. Set jumper J7 to "SPD" for speed control or to "TRQ" for torque control. (See fig. 1, p. 3.) A.
FIG. 2A – LINEAR TORQUE CURVE FIG. 2B – NON-LINEAR TORQUE CURVE III. SETTING SELECTABLE JUMPERS. The KBRG-255 has customer selectable jumpers which must be set before the control can be used (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.
For example, if the tach is 25V/KRPM and the motor speed is 3,600 RPM, use the "50V" J4 position. For other tach-generator voltages and motor speeds, an external resistor (RT) may be used as follows. i. Install resistor in series with either tach-generator lead. ii. Place J4 in "7V" position. iii. The value of RT is calculated as follows. RT = [(5.
TABLE 4 – TERMINAL BLOCK WIRING INFORMATION Supply Wire Gauge* Terminal Block Designation Connection Designation Minimum Maximu m Maximum Tightening Torque (lb inch) TB1 (Power Board) F+, F- 22 14 7 TB1 (Logic Board) Logic Connections 22 14 3.5 TB2 L1, L2, M1, M2 18 8 16 *AWG, Cu wire only. A. AC Line – Connect AC line to terminals L1 and L2. (See fig 3.) FIG. 3 – AC LINE AND ARMATURE VOLTAGE B. Ground – Be sure to ground (earth) the control via green screw located on chassis C.
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ii. Bidirectional operation using reversing contacts – Connect to terminals "10," "11," "12," "13" as per fig. 6. iii. Bidirectional operation with potentiometer – Connect potentiometer to terminals "10," "11," "12" as per fig. 6. FIG. 6 – MAIN SPEED POTENTIOMETER CONNECTIONS FORWARD REVERSE BIDIRECTIONAL with REVERSING CONTACT BIDIRECTIONAL with SPEED POT F. Voltage Following – An isolated analog voltage can be used in FIG. 7A – VOLTAGE FOLLOWING lieu of main speed potentiometer.
FIG. 7B – ENABLE FIG. 7C – START/STOP CIRCUIT FIG. 7D – ALARM CONTACTS RY1 TB1 3 4 ALARM CONTACTS TABLE 6 – CONTROL STATE vs RELAY CONTACT STATE Relay Contact State Description of Control State Using Start / Stop Start / Stop Bypassed No power to control O O Power applied O X Control in Stop mode O NA Control is started with Start button X NA Control has “Timed Out” in TCL O NA O – Open, X – Closed, NA – Not Applicable J. Tach-generator Input – Terminals "1" and "2" are used FIG.
VIII. TRIMPOT ADJUSTMENTS. The KBRG-255 contains many trimpots which have been factory adjusted for most applications. (See table 2, p. 2. for factory settings.) (Note: fig. 1, p. 3 presents the various trimpots with their locations. They are shown in the approximate adjustment position.) Some applications may require readjustment of trimpots in order to tailor control to exact requirements. Readjust trimpots as follows: A.
C. Deadband (DB) – The DB trimpot sets the amount of main speed potentiometer rotation required to initiate control voltage output. It is factory adjusted to approximately 25% of rotation. The DB trimpot also determines the amount of delay that will occur before regeneration starts. (Regeneration occurs when the applied load torque is in the same direction as the motor rotation.) To readjust the DB to factory setting: i. Set Main Speed pot to zero speed position. ii. Set DB trimpot to full CCW position.
G. Response (RESP) Trimpot – This trimpot determines the dynamic response of the control. The factory setting is approximately 50% of full rotation. The setting may be increased if a faster response is required. (Note: If response is made too fast, unstable operation may result.) H. Timed Current Limit (TCL) Trimpot – Trimpot is functional only when control is wired for 3-wire Start/Stop and J6 is in the TCL position. The TCL trimpot sets the delay time for the Timed Current Limit.
X – LIMITED WARRANTY For a period of 18 months from date of original purchase, KB will repair or replace without charge devices which our examination proves to be defective in material or workmanship. This warranty is valid if the unit has not been tampered with by unauthorized persons, misused, abused, or improperly installed and has been used in accordance with the instructions and/or ratings supplied.
