Edwards GXS Series

9.10.1 Normal speed
The full speed sengs for the booster and dry pump are set by us when the pump is
manufactured. If a lower full speed is required then this can be set using a downloadable
conguraon. Conguraons can be downloaded using our Conguraon Download
Ulity (CDU). Please contact our applicaon specialists to discuss your requirements.
By default, dry pump and booster speed control are set to normal, meaning that the
pumps will run at their congured full speeds.
9.10.2 External voltage
The auxiliary gauge input on the rear of the system (available as an oponal accessory,
shown in Figure: The controls/connectors on the rear of the pump (system with rear
exhaust and castors/levelling feet ed), item 14) can be used as a 0-10 V speed control
for either the dry pump or the booster. The connector is a standard RJ45 (refer to Figure:
Pin numbers on the auxiliary gauge interface) to idenfy the pin numbers. Use the pin 3
for the external voltage signal and pin 5 for signal common.
Figure 66 Pin numbers on the auxiliary gauge interface
The 0-10 V input is scaled linearly and may be congured such that the pump runs at
100% speed when the input voltage is either 0 V or 10 V. The pump speed may be
decreased to 20 Hz by increasing/decreasing the supply voltage depending on the
external voltage speed control conguraon.
Note:
If the cable becomes disconnected, the pump will run at full speed.
To enable the external voltage as the speed control source, use the PDT to select the
external voltage for the appropriate pump.
9.10.3 SIM protocol
It is possible to independently control the speed of both the dry pump and the booster
using the built-in SIM protocol. Refer to the SIM Protocol Manual (P411-00-200) for
details of the commands to use.
The system supports the SIM protocol by both the Ethernet and the serial ports. Refer to
How to set up the Ethernet port on page 151 for informaon about seng up the
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M58800880_H - Pump display terminal