AUTOMATIC SPEED CONTROL: The
Kooltronic Fan and Blower Automatic Speed Control (Part Number KSC100) is a solid
state "smart" controller packaged in a NEMA 1 type enclosure for remote
mounting. The allowable input power supply range is 95 to 250 Volts, 47 to 63 Hz.
It is furnished standard with an IEC 320 connector, a power supply fuse and a temperature
sensor. Additional temperature sensors are optional.
The controller will operate single or multiple fans or blowers of compatible voltage
and frequency up to a combined load of 6 Amps. The controller may be operated by
either a control voltage signal of 0 to 10 VDC, a control current signal of 0 to
20 mA or one to three temperature sensors. With multiple temperature sensors the
controller will respond to the highest sensed temperature.
The control circuit board is furnished with a terminal strip for field connecting
the sensor and fan wires. A pressure type strain relief connector is furnished in
the enclosure. If required by the installation or by code, this connector can be
replaced with a 1/2-inch [12.7mm] trade size conduit connector.
A wide variety of control logic options can be field programmed into the controller
by means of a board mounted DIP switch. These include fan idle or starting speed
at 30%, 40%, 50% or 60% of supply voltage, fan on or off below the idle setting,
control temperature setting of 86ºF (30ºC), 95ºF (35ºC), 104ºF
(40ºC), 113ºF (45ºC), and temperature differential settings of 7ºF
(4ºC) and 18ºF (10ºC). The selectable fan on/off feature is operative
when the temperature(s) drop below the control temperature setting.
Consult factory for use with compatible Kooltronic fans or blowers.