Indicator Leds; Figure 14 Valve Connector - Edwards nEXT730D Instruction Manual

default settings for a normally open vent valve and Aux output 2 has default settings for
a fan.
Edwards nEXT air coolers and vent valve accessories (refer to Accessories), which have
the corresponding connector fitted, are pre-configured to Aux output 1 and Aux output
2 for convenience and to provide plug and play ability. nEXT vent valves are pre-
configured to Aux output 1 and the default setting for vent options 1 are appropriate for
this type of accessory. nEXT air coolers are pre-configured to Aux output 2 and the
default setting for vent options 2 are appropriate for this type of accessory.
Bare wire versions of the nEXT air coolers and vent valve accessories are available, which
are not pre-configured. This enables any combination of accessory to be used and
independently configured and controlled on Aux output 1 and Aux output 2.

Figure 14 Valve connector

Pin number
1
2
3
4

4.14 Indicator LEDs

The nEXT pump has seven indicator LEDs. Refer to
Table 14 Indicator LEDs
LED
Normal LED
Status LED
B8J200880_D
300812671_002_C3
B8J200880_D - Technical data
Signal
0V return
Aux output 1
Aux output 2
Chassis
Description
This green LED illuminates when the pump rotational speed is
above the normal speed setting, irrespective of whether the
pump is accelerating or decelerating.
This yellow LED flashes with a 50% duty cycle at the rotational
frequency of the pump motor. At high speeds it appears con-
tinuously illuminated. The LED switches off when the rota-
tional speed is very low or stopped. If a service is due, this
LED flashes in a sequence to indicate which service operation
is required. Refer to
Page 48
Polarity
Negative
Positive
Positive
Chassis
Figure: controller view.
Fault finding on page 96.
08/2021 - ©Edwards Limited