Normal Speed; External Voltage; Sim Protocol; Figure 66 Pin Numbers On The Auxiliary Gauge Interface - Edwards GXS Series Instruction Manual

9.10.1 Normal speed

The full speed settings 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
configuration. Configurations can be downloaded using our Configuration Download
Utility (CDU). Please contact our application 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 configured full speeds.

9.10.2 External voltage

The auxiliary gauge input on the rear of the system (available as an optional accessory,
shown in
exhaust and castors/levelling feet
for either the dry pump or the booster. The connector is a standard RJ45 (refer to
Pin numbers on the auxiliary gauge
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 configured 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 configuration.
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
M58800880_H - Pump display terminal
Figure: The controls/connectors on the rear of the pump (system with rear
fitted), item 14) can be used as a 0-10 V speed control
interface) to identify the pin numbers. Use the pin 3
on page 151 for information about setting up the
Page 146
Figure: