Seepex 7S115C User manual

7S115C_USE_1.doc DATE : 25/08/2003 REV. 0.1
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7S115C : NEW DRIVE SYSTEM FOR LOW SPEED PM DC MOTORS.
- Power supply 115V- 50/60 Hz
- PWM (pulse width modulation) technique for the speed regulation.
- Operating frequency 18 Khz : that means fine speed regulation, long life for the motor brushes and silent operations.
- Speed reference : ten turns potentiometer (manual operation) or external current signal 4-20 mA (automatic operation).
- Smooth acceleration of the motor to avoid shock for the load
- Current limited : protection of the motor and max torque for the load known
- Thermal protection to ensure no overload long time operations
- Overload current protection to avoid damage to the drive system if the motor is stalled for few seconds.
- Alarm LED indicator
- R x I compensation to ensure the constant speed operation in the whole range of load.
- Easy calibrations with trimmers on the board (minimum and max speed, acceleration ramp, RxI compensation) .
- Inhibit input to stop the motor without switch-off the power supply.
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TECHNICAL SPECIFICATIONS.
POWER SUPPLY 115 V 50/60 Hz
PROTECTION FUSE 10 AT 250VAC (size 5x20)
RATED MOTOR POWER 380 W
RATED MOTOR SPEED 700 RPM
RATED MOTOR VOLTAGE 110 VDC
RATED MOTOR CURRENT 4,6 ADC
RATED MOTOR TORQUE 5 Nm
MAX MOTOR CURRENT 16 ADC ( Ta = 25°C) – 16Nm
OVERLOAD CURRENT PROTECTION > 5,5A - 3‘’ (motor torque > 6 Nm)
FREQUENCY PWM 18 KHz
CONTROLLER MAX TEMPERATURE 80 °C
SPEED REFERENCE MANUAL 10K OHMS – TEN TURNS POTENTIOMETER
SPEED REFERENCE AUTOMATIC 4 –20 mA EXTERNE SOURCE
SPEED RANGE CONTROL 30 – 700 RPM (TILL RATED TORQUE)
SERVICE AT RATED POWER S2 – 40’
ADJUSTMENTS WITH TRIMMERS
DESCRIPTION TRIMMER RANGE FACTORY SET
MAX SPEED VMAX (CW INCREASE) 70V(600RPM) – 90V(780RPM) 80V (680RPM)
ACCELERATION DELAY ACC (CCW INCREASE) 0 – 3 s MIDDLE POSITION
MIN SPEED VMIN (CW INCREASE) 0 – 25V 0V
IR COMPENSATION RxI (CW INCREASE) 0 – 35V (7Ω x 5A) 25 V
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CONTROL BOX.
Hi Press
Run-Dry
4-20mA
MANUAL / OFF / AUTO: main switch with selection of the operating mode.
SPEED POTENTIOMETER: Ten turns potentiometer , with lock and position indicator , for precise speed setting.
ALARM LED: indicates the thermal protection, overload current alarm and power stage broken.
4-20mA CONNECTOR : optoinsulated input 4-20 mA (pins 1-2) + not insulated input inhibit (pins 4-5) from external device for
automatic operation
RUN-DRY CONNECTOR : output supply 115 VAC (pins 1-2) for external device + inhibit (pins 4-5)
HI-PRESS CONNECTOR : output supply 115 VAC (pins 1-2) for external device + inhibit (pins 4-5)
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INSTALLATION AND SET UP PROCEDURES.
The equipment (motor + controller) is ready for operation ; connect the line 115VAC supply source with the earth connection (the
section of additional line wires must be > 0,75mm²).
DO NOT USE THE DRIVE SYSTEM IN AN EXPLOSIVE ATMOSPHERE
DANGER : If changes on the calibrations are needed they must be done by qualified electrical maintenance personnel : THE
TRIMMERS MUST BE ADJUSTED WITH INSULATED SCREW DRIVES.
RXI CALIBRATION :- START THE MOTOR AND WAIT FEW MINUTES FOR THE THERMAL STABILIZATION
- MEASURE THE SPEED WITHOUT THE LOAD
- LOAD THE MOTOR AND CALIBRATE THE TRIMMER TILL THE SAME SPEED WILL BE OBTAINED
If changes on the internal wires connections or fuse exchange are needed TAKE-OFF THE MAIN SUPPLY BEFORE ANY
OPERATION.
AUTOMATIC RESTART OF THE CONTROLLER MAY OCCUR IF THE LINE POWER IS TEMPORARY LOST.
CONNECTION OF EXTERNAL DEVICES : PAY ATTENTION TO THE RIGHT CONNECTIONS OF THE INHIBIT AND 115VAC
SUPPLY
TROUBLESHOOTING.
MOTOR NOT RUN - CHECK THE MAIN POWER CONNECTION
- ENSURE THE MAIN SWITCH TO “ON”
- ENSURE INHIBIT OPEN
- CURRENT LIMIT (CHECK THE CAUSE OF MOTOR OVERLOAD)
BLOW FUSE
(GREEN LED OFF)
- DAMAGE WIRES
- WRONG LINE VOLTAGE
- MOTOR SHORT CIRCUIT
NO SPEED CONTROL - CHECK THE POTENTIOMETER WIRES
- CHECK THE CONNECTOR TO EXTERNAL SPEED
ALARM
(RED LED ON)
- CHECK THE LOAD TO ENSURE THE RATED POWER OPERATION OF THE
MOTOR AND IF THE ROTOR IS LOCKED
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BRUSH CHANGE OPERATION