Gardner Denver
15 Base Load Sequencing (BLS) (Optional)
63
15.13 Installation and Activation - RS485:3
module
This chapter explains how to retrofit the RS485:3
module if it has not already been installed in the GD
Pilot TS controller ex-factory. If the module is already
installed, the “X08” connector will be visible at the back
of the GD Pilot TS.
The RS485:3 module extends the GD Pilot TS by an
additional 3rd RS485 interface.
Ordering information:
Part
number:
ZS1075506
Scope of supply:
RS485:3 module
Connector kit for slave
controllers
Installation
instructions
15.13.1 Installation:
1) Please read the safety instructions (see chapter 2).
2) Switch off the compressor and isolate it from the
power supply.
3)
Wait a 10 minutes before touching electrical
components.
4) Disconnect all connectors from the GD Pilot TS
and remove the cover.
5) Plug the module into the provided socket. Ensure
that all pins are in the socket and not beside it.
6) Close the cover, install all connectors and switch
on the power supply.
15.13.2 Activation
Activate the Base Load Sequencing feature by entering
the code
1234
once on the
Access Code
page.
Note
If code 1234 is entered for a second time, the Base
Load Sequencing feature will be deactivated again.
The Base Load Sequencing feature can be activated
even if the RS485:3 module is not installed. In this
case, you will get a communication fault message
because the master cannot establish communication
with the slaves.
15.13.3 Wiring Method
We strongly recommend that you use shielded and
twisted pair (TP) cables (types 2 x 2 x 0.25 to 0.75
mm
2
).
Total bus wiring length must not exceed 1,200 m.
The RS485 interfaces of the master and the slave
compressor controllers should form a bus structure, i.e.
all compressors should be connected in series.
The following image shows examples of correct and
incorrect wiring of the compressor station.
Fig. 61 Wiring of the compressor station
VS
