9
Stop/Start
Connect remote switch between pins 7 and 16 of the 25D connector. A TTL compatible logic input (Low 0V, High 5V) may be applied to pin 7.
Low input stops the pump, high input runs the pump. With no connection, the pump will default to running.
Direction
Connect remote switch between pins 5 and 16 and disable the front panel reversing control by linking pins 6 and 18 of the 25D connector.
Open switch for clockwise rotation, close for counter-clockwise. Alternatively a TTL compatible logic input (Low 0, High 5V) may be applied to
pin 5. Low input will run the pump in a counter-clockwise direction, High input in a clockwise rotation. No connection; the pump will default to
clockwise rotation.
Speed
A remote potentiometer with a nominal value of between 1k
Ω
and 2k
Ω
with a minimum of 0.25W should be wired as shown. When using a
remote potentiometer, do not apply a voltage/current control input signal at the same time. The speed control signal will require calibration
relative to the minimum and maximum settings of the potentiometer. Use the offset and range potentiometers as described under calibration.
Tachometer
This facility can be used to indicate motor speed or total the number of motor revolutions. When using the square wave, the output is:
1179 cycles per output shaft revolution on the 220rpm drive.
733 cycles per output shaft revolution on the 55rpm drive.
Care and maintenance
The only scheduled maintenance required on the 504Du/RL is to inspect the motor brushes and to replace them before their length is less than
6mm 1/4". The life of the brushes will depend on the duty of the pump, which is expected to be at least 10,000 hours at maximum speed. When
the pump needs cleaning, remove the pumphead and use a mild solution of detergent in water. Do not use strong solvents.
If the gearbox is rebuilt you should use 15 ml of the recommended lubricant, which is RD105, this is a SAE 30 mineral oil loaded with
molybdenum disulphide to form a soft fluid grease.
0 - 5V DC
5V
1
16
2
7 3 3 H z @ 5 5 rp m
1 . 1 7 9 k H z @ 2 2 0 rp m
Summary of Contents for 504Du
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