Frick SBTP 355 Series, Установка, эксплуатация и обслуживание

Страница: 18 / 34

070.655-IOM (FEB 22)
Page 18
SBTP Rotary Screw Compressor
Installation
Installing electrical components
Slide stop transmitter
The slide stop transmitter measures the position of the
slide stop (SS) using a 20 to 4 mA signal to cover the
range of minimum to maximum Vi. See
Figure 14 . The
signal is sent to your control system so that it can adjust
the position of SS according to system pressures. The
correct SS position is important to achieve the most ef-
ficient compressor operation. Connect to ± and signal as
shown in Figure 15 . Refer to the latest Quantum Control-
ler Operations manual for calibration procedure, currently
090.070-O. Contact Frick for the most up-to-date version.
Figure 14: Slide stop transmitter
Figure 15: Wiring diagram for slide stop transmitter
Capacity slide valve transmitter
The slide valve transmitter measures the position of the
slide valve (SV) and sends a 4 to 20 mA signal to your
control system. See
Figure 16 and Figure 17 . The control-
ler adjusts the position of the SV according to the mo-
tor load setpoint. The position is important in order to
correctly load the compressor and motor. It is important
not to overload the compressor and motor. Observe the
maximum power input and ensure design limitations are
not exceeded. Connect to ± and signal as shown in the
Figure 17 . For compressor panel instructions, refer to the
latest Quantum Controller Operations, currently
090.070-O. Contact Frick for the most up-to-date version.
Figure 16: Capacity slide valve transmitter
END VIEW
DIN CONNECTOR
STAINLESS STEEL WELL
HEAT ISOLATOR
CAST ALUMINUM HOUSING
COMPRESSOR UNLOAD CYLINDER
SHADED AREA SHOWS
CAPACITY LINEAR TRANSMITTER
Note: Shaded are shows capacity linear transmitter.
Figure 17: Wiring diagram for slide valve transmitter
Directional control valves
You must wire solenoids YY1, YY2, YY3 and YY4 to give
the correct function. See the
Compressor hydraulic system
section for a description of their function. For control
system information, refer to the latest Quantum Control-
ler Operations, currently 090.070-O. Contact Frick for the
most up-to-date version. See the following figure.
Figure 18: Directional control valve wiring diagram
Cast aluminum housing
DC isolated to ground
Supply 12 VDC
Out 20-4 mA
PCB
GND
Stroke
DIN connector 43650-A
Printed circuit board
Cast aluminum housing
Stainless steel
sensor well
DIN connector
Heat isolator
End view
Stainless steel well
Compressor unload cylinder
Cast aluminum housing
Cast aluminum housing
Stroke
GND
Out 4-20 mA
Supply 12 VDC to 24 VDC
PCB
Slide valve load
Neutral Hot
Slide valve unload
Slide stop increase
Slide stop decrease