6.6 Connecting the external pressure transducer
Material Retrofit kit: Retrofit kit "External pressure transducer SC USS"
Use suitable screened, copper-core cable (e.g.:LIYCY 2 x 0.75 mm
2
for ambient temperatures up
to 30 °C and laying method C).
Precondition The supply disconnecting device is switched off.
The disconnecting device is locked off.
A check has been made that no voltage is present.
Cable length between the machine and the pressure transducer: < 50 m
By means of a pressure transducer, the pressure in the gas network can be measured at any se‐
lected location and this signal used to regulate the compressor.
This ensures optimum compressor regulation with regard to the network pressure at the selected
location.
Safety monitoring of the machine's internal pressure is unaffected.
Your authorized KAESER Service Technician will be glad to provide support on planning and
executing an individual solution.
1. Install the isolating transformer in the control cabinet.
2. Connect the power supply for the isolating amplifier.
3. Make the connection between the output of the isolating amplifier and the analog input of the
frequency controller.
4. Install the pressure transducer at the selected location in the gas network.
5. Using a suitable cable, connect the pressure transducer to the isolating amplifier input.
➤ Connect as large an area of the screening as possible to the mounting plate in the control
cabinet or use an EMC fitting to make contact.
6. When commissioning the machine with SIGMA CONTROL 2 , activate the
< Network actual
pressure >
setting in the
< FC USS >
menu.
Further information The electrical diagram in chapter 13.3 contains further details of the pressure transducer connec‐
tion.
6.7 Options
6.7.1 Option H1
Anchoring the machine
➤ Use appropriate fixing bolts to anchor the machine.
Further information Details of the fixing holes are contained in the dimensional drawing in chapter 13.2.
6 Installation
6.6 Connecting the external pressure transducer
40
Service Manual Screw Compressor
ESD 442/14 bar (abs) SFC SIGMA CONTROL 2 ESD_2C_10357405_10–LIN_00 E
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