Controller And Led Functions - Cole-Parmer SD Mode D'emploi

CONTROLLER AND LED FUNCTIONS

SD Mixer Controller 55008-07
The precision digital controller, Figures 2, 3, and 4, is used to turn on and set the speed, timer,
direction, and torque limits for the mixer motor.
Four-Digit LED Display
LED Indicators
Increase Button
Torque Button
Timer Button
Speed Button
Reverse Button
Zero Torque
Button
START/PAUSE Button
Resume LED
Decrease Button
Indicator
Figure 2: SD Controller Functions and Display
The controller ensures accurate, dependable motor speed (mixing) control, with "soft-start" and
smooth, gradual adjustment to the speed setting. Constant speed is maintained electronically via
automatic compensation for changes in load torque demands at both high and low speeds. Built-
in motor current compensation minimizes speed drift with changes in load. Motor current limiting
protects the system in case of a locked rotor condition. Mixer rotation is reversible.
The four-digit LED Display will turn on when the controller is connected to mains power and the
POWER Switch is in the ON position
LED Indicators identify the function being displayed (SPEED, TIMER, or TORQUE). A flashing
MIN or Ncm LED and audible alarm indicate a limit condition has been reached.
INCREASE Button increases the value of the parameter and is used to enable Resume.
DECREASE Button decreases the value of the parameter and is used to disable Resume.
START/PAUSE Button starts the motor rotation. If mixer is already in operation, START/PAUSE
will pause rotation. Rotation also stops when limit condition is reached. Also used for setting
SPEED, TIMER, or TORQUE parameters and Resume.
REVERSE Button changes direction of motor rotation. Mixer rotates by default in a clockwise
direction when viewed from the motor looking down the mixing shaft. Press the REV button for
motor to rotate in a counter-clockwise direction.
TIMER Button displays last countdown setting and is used to set countdown timer.
SPEED Button displays actual mixer shaft speed and is used to set motor speed.
TORQUE Button displays current torque value (Ncm) and is used to set High and Low Torque
limits. Mixer automatically stops when preset limits are reached.
ZERO TORQUE Button zeroes the torque display when impeller is running in free air or in a
reference liquid.
Resume LED will be lit when Resume is enabled. Resume is disabled by default.
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