LEESON R ELECTRIC MOTORS, GEARMOTORS AND DRIVES User’s Manual 17429X.00 SERIES MODELS: 174298.00 174299.
II Table of Contents 17429X.00 Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IV Regenerative Drives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Dimensions. . . . . . . . . . . . . . . . . . .
III REGENERATIVE CURRENT LIMIT (REGEN CL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Multiple fixed speeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Adjustable speeds using potentiometers in series. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IV 17429X.00 Drives Leeson’s 17429X.00 Series drives are four-quadrant regenerative PWM drives for low voltage applications. These open chassis drives come with the following features: • PULSE WIDTH MODULATION Lower form factor than SCR drives (1.01 versus 1.37) throughout the motor speed range. Motor runs quieter, with greater efficiency and less maintenance. • FOUR QUADRANT REGENERATIVE OPERATION See the Regenerative Drives section. • REGENERATIVE BRAKING No contactors required.
Regenerative Drives Most non-regenerative variable-speed DC drives control current flow to a motor in one direction. The direction of current flow is the same direction as the motor rotation. Non-regenerative drives operate in Quadrant 1, and also in Quadrant 3 if the drive is reversible (See Figure 1). Motors must stop before reversing direction. Unless dynamic braking is used, non-regenerative drives cannot decelerate a load faster than coasting to a lower speed.
Specifications MAX ARMATURE 1 MIN. PEAK ARMATURE MAX ARMATURE DC INPUT VOLTAGE CURRENT (AMPS DC) CURRENT (AMPS DC) VOLTAGE (VDC) RANGE (VDC) 174298.00 120* 250 12 or 241 10 - 32 174299.00 100** 240 36 or 481 20 - 62 MODEL Acceleration Time Range Deceleration Time Range Analog Input Voltage Range (Signal Common must be same as battery common) Input Impedance (S1 to S2) Speed Regulation Speed Range Form Factor Ambient Operating Temperature Range Weight 174298.00 174299.
Dimensions ; = ; = ; = ; = ; = ; = ; = ; = -/5.4).' 3,/43 ; = 8 ; = ; = Figure 2. 174298.00 and 174299.
Installation Mounting m WARNING Do not install, rewire, or remove this control with input power applied. Doing so may cause damage or serious injury. Make sure you have read and understood the Safety Warnings section before attempting installation. • Drive components are sensitive to electrostatic fields. Avoid contact with the circuit board directly. Hold drive by the chassis only. • Protect the drive from dirt, moisture, and accidental contact.
Shielding guidelines m WARNING Under no circumstances should power and logic leads be bundled together. Induced voltage can cause unpredictable behavior in any electronic device, including motor controls. As a general rule, Leeson recommends shielding of all conductors. If it is not practical to shield power conductors, Leeson recommends shielding all logic-level leads. If shielding of logic level leads is not practical, the user should twist all logic leads with themselves to minimize induced noise.
Speed adjust potentiometer m WARNING Be sure that the potentiometer tabs do not make contact with the potentiometer enclosure. Mount the speed adjust potentiometer through a 0.38 in. (10 mm) hole with the hardware provided (see Figure 4). Install the circular insulating disk between the panel and the 10K ohm speed adjust potentiometer. Twist the speed adjust potentiometer wire to avoid picking up unwanted electrical noise. If speed adjust potentiometer wires are longer than 18 in.
MOUNT THROUGH A 0.38 IN. (10 MM) HOLE CW WIPER CCW NUT STAR WASHER SPEED ADJUST POTENTIOMETER POT TAB ASSIGNMENTS INSULATING DISK PANEL Figure 4. Speed Adjust Potentiometer 3 3 #7 3 4" Figure 5.
Heat Sinking 174298.00 and 174299.00 drives are pre-mounted on a heat sink. For optimum heat transfer, mount the drive with heat sink fins standing vertically. Connections m WARNING Do not initially connect this equipment with power applied. Failure to heed this directive may result in damage or serious injury. Leeson strongly recommends the installation of a master power switch in the voltage input line, as shown in Figure 6.
Fuse Wire a power input fuse between the stop switch (if installed) and the BAT+ terminal on the circuit board. The fuse should be rated at 150% of input voltage and 150 - 200% of maximum motor nameplate current. An example of a fuse we recommend would be Cooper Bussmann AMG-125, AMG-150, AMG-175, or AMG-200. ! "!4 "!4 &USE %MERGENCY 3TOP 3WITCH "!44%29 0!#+ -/4/2 ! ! Figure 6.
Wiring m WARNING Do not install, remove, or rewire this equipment with power applied. Failure to heed this warning may result in damage, explosion, or serious injury. To prevent the risk of injury or fatality, avoid direct contact with the printed circuit board or with circuit elements. Do not disconnect any of the motor leads from the drive unless power is removed. Opening any one motor lead may destroy the drive. This drive is not diode-protected from reverse battery voltage.
10 Contactor Connections (Optional) A contactor may be connected between the battery and the drive as shown in Figure 8. The contactor and precharge circuit allow the drive to be soft charged which helps prevent sparking when the battery is being connected to the drive. Another advantage of using the contactor is that it serves as an additional safety device to protect against a run away condition, some cases of reverse polarity battery connection, and excessive charging voltages.
11 0RE #HARGE "!4 -ASTER 3WITCH &USE -AIN #ONTACTOR OPTIONAL "!44%29 0!#+ Figure 8.
12 Operation m WARNING Dangerous voltages exist on the drive when it is powered, and up to 60 seconds after power is removed and the motor stops. BE ALERT. High current can cause serious or fatal injury. For your safety, use personal protective equipment (PPE) when operating this drive. Before applying power • Verify that no foreign conductive material is present on the printed circuit board. • Verify battery pack connections to the drive. Check for proper polarity.
13 Starting and stopping methods m WARNING Decelerating to minimum speed, braking or coasting to a stop is recommended for frequent starts and stops. Do not use any of these methods for emergency stopping. They may not stop a drive that is malfunctioning. Removing the DC power to the drive is the only acceptable method for emergency stopping. Frequent decelerating to minimum speed produces high torque.
14 Enable/Brake/Direction Enable Close the enable to allow the motor to run at the speed set by the speed pot or input signal. Brake Close the brake terminals to brake the motor to the speed set by the MIN SPD trimpot. The amount of time the drive takes to brake the motor to MIN SPD is determined by the DECEL trimpot. The amount of braking Torque used to stop the motor is set by the REGEN CL trimpot. MIN SPD is typically set to zero speed.
15 Voltage follower Instead of using a speed adjust potentiometer, the drive may be wired to follow a 0 - 5 VDC signal (Figure 10). Connect the signal input (+) to S2. Connect the signal common (-) to S1. Make no connection to S3. A potentiometer can be used as a voltage divider to scale the analog input voltage. The analog signal common must be the same common as the battery common connected to BAT-. It is acceptable to connect the negative side of the battery to Earth ground in some applications.
16 Calibration m WARNING Dangerous voltages exist on the drive when it is powered, and up to 60 seconds after power is removed and the motor stops. When possible, disconnect the voltage input from the drive before adjusting the trimpots. If the trimpots must be adjusted with power applied, use insulated tools and the appropriate personal protection equipment. BE ALERT. High current can cause serious or fatal injury. Each drive is factory calibrated to its maximum armature voltage. The 174299.
17 MINIMUM SPEED (MIN SPD) The MIN SPD setting determines the motor speed when the speed adjust potentiometer is turned full CCW or when the BRAKE is closed. It is factory set for zero speed. To Calibrate MIN SPD: 1. Close the BRAKE terminals. 2. Turn the MIN SPD trimpot clock-wise until the desired motor speed is reached (usually zero). MAXIMUM SPEED (MAX SPD) The MAX SPD setting determines the motor speed when the speed adjust potentiometer is turned full CW. It is factory set for maximum rated speed.
18 DECELERATION (DECEL) The DECEL setting determines the time the motor takes to decelerate to a lower speed. See Specifications for approximate deceleration times. The DECEL setting is factory set to its minimum value (full CCW). To calibrate DECEL: 1. Set the DECEL trimpot full CCW. 2. Apply power to the drive and turn the main speed adjust potentiometer from full CW to full CCW. If an input voltage signal is used instead of a speed adjust pot, set the input signal from maximum to minimum.
19 MOTOR CURRENT LIMIT (MOTOR CL) m WARNING MOTOR CURRENT LIMIT should be set to 120% of motor nameplate current rating. Continuous operation beyond this setting may damage the motor. If you intend to operate beyond the rating, contact your Leeson representative. The MOTOR CURRENT LIMIT setting determines the maximum armature current output of the drive. Recalibrate the MOTOR CL setting when a lower current limit is required.
20 174298.00 1/2 HP 24 VDC 1/2 HP 12 VDC MOTOR CL REGEN CL MOTOR CL REGEN CL 3/4 HP 24 VDC 3/4 HP 12 VDC MOTOR CL REGEN CL MOTOR CL REGEN CL 1 HP 24 VDC 1 HP 12 VDC MOTOR CL REGEN CL MOTOR CL REGEN CL 1 1/2 HP 24 VDC 1 1/2 HP 12 VDC MOTOR CL REGEN CL MOTOR CL REGEN CL 2 1/2 HP 24 VDC 2 HP 24 VDC MOTOR CL REGEN CL MOTOR CL REGEN CL 3 HP 24 VDC MOTOR CL REGEN CL Note: The above settings are approximate.
21 174299.00 1 HP 48 VDC 1 HP 36 VDC MOTOR CL REGEN CL MOTOR CL REGEN CL 1 1/2 HP 48 VDC 1 1/2 HP 36 VDC MOTOR CL REGEN CL MOTOR CL REGEN CL 2 HP 48 VDC 2 HP 36 VDC MOTOR CL REGEN CL MOTOR CL REGEN CL 3 HP 48 VDC 3 HP 36 VDC MOTOR CL REGEN CL MOTOR CL REGEN CL 4 HP 48 VDC 3 3/4 HP 36 VDC MOTOR CL REGEN CL MOTOR CL REGEN CL 5 HP 48 VDC MOTOR CL REGEN CL Note: The above settings are approximate.
22 Application Notes Multiple fixed speeds Replace the speed adjust potentiometer with series resistors with a total series resistance of 10K ohms (Figure 14). Add a single pole, multiposition switch with the correct number of postions for the desired number of fixed speeds. S3 TOTAL SERIES RESISTANCE 10K OHMS S2 S1 Figure 14.
23 Adjustable speeds using potentiometers in series Replace the speed adjust potentiometer with a single pole, multi-position switch, and two or more potentiometers in series, with a total series resistance of 10K ohms. Figure 15 shows a connection for fixed high and low speed adjust potentiometers. CW S3 HIGH SPEED 5K OHM S2 LOW SPEED S1 CW 5K OHM Figure 15.
24 RUN/JOG Switch Using a RUN/JOG switch is recommended in applications where quick stopping is not needed and frequent jogging is required. Use a single pole, two position switch for the RUN/JOG switch, and a normally closed, momentary operated pushbutton for the JOG pushbutton (see Figure 16). When the RUN/JOG switch is set to JOG, the motor decelerates to minimum speed. Press the JOG pushbutton to jog the motor. Return the RUN/JOG switch to RUN for normal operation.
25 Troubleshooting m WARNING Dangerous voltages and currents exist on the drive when it is powered, and up to 60 seconds after power is removed and the motor stops. When possible, disconnect the drive while troubleshooting. High current can cause serious or fatal injury. Before troubleshooting Perform the following steps before starting any procedure in this section: 1. Disconnect DC voltage input from the drive. 2. Check the drive closely for damaged components. 3.
26 Status LEDs Power LED Green LED lights up when power is applied to the drive. Fault Code LED Provides a visual representation of the cause of a fault. Faults 2 - 5 require either the Enable or battery voltage to be cycled in order to clear the fault.
27 Symptom Possible Causes Suggested Solutions Line fuse blows Line fuses are the wrong size. Check that line fuses are the correct size. Check motor cable and armature for shorts. Motor cable or armature is shorted to ground. Line fuse does not blow, but the motor does not run. Nuisance tripping caused by a combination of ambient conditions and high-current spikes.
28 Symptom Possible Causes Suggested Solutions Motor runs too fast at maximum speed setting or minimum speed setting. MIN SPD and MAX SPD settings are too high. Recalibrate MIN SPD and MAX SPD. Battery voltage too low. Charge batteries. MAX SPD setting is too low. Increase MAX SPD setting. IR COMP setting is too low. Increase IR COMP setting. Motor is overloaded. Check motor load. Resize the motor and drive if necessary. Check red fault LED status. Drive is reaching over temperature trip.
29
LEESON R ELECTRIC MOTORS, GEARMOTORS AND DRIVES 2 1 0 0 Wa s h i n g t o n S t r e e t G r a f t o n , W I 5 3 0 2 4 - 0 2 4 1 U . S . A . Phone: (262) 377-8810; Fax: (262) 377-3440 Document Number 250–0403, Revision 0 Printed in the U.S.
