Edwards nEXT 55, Instruction Manual

Page: 31 / 116

Figure 13 Valve connector
Pin number Signal Polarity
1 0V return Negative
2 Aux output 1 Positive
3 Aux output 2 Positive
4 Chassis Chassis
3.11 Indicator LEDs
The pump has five indicator LEDs. Refer to Figure: Motor controller status information .
Table 9
Indicator LEDs
LED Description
Normal LED
The green LED comes on when the rotational speed of the
pump is more than the normal speed setting, irrespective of the
acceleration or deceleration of the pump. The LED is duplicated
at the sides of the pump.
Status LED
The yellow LED flashes with a 50% duty cycle at the rotational
frequency of the pump motor. At high speeds it is continuously
on. The LED sets to off when the rotational speed is very low or
stopped. If the next service is available, the LED flashes in a se-
quence to show which service operation is necessary. Refer to
Fault finding on page 90. The LED is duplicated at the sides of
the pump.
Alarm LED
The red LED flashes in a sequence to show an error code if a
FAIL condition is preventing the pump operation. The error co-
des can be used for the fault finding as given in Fault finding on
page 90. The LED is duplicated at the sides of the pump.
Serial Communica-
tions Receive (Rx)
LED
The yellow LED flashes when the activity is sensed on the serial
link receive line. It can be used for the fault finding the serial
link.
Serial Communica-
tions Transmit (Tx)
LED
The yellow LED flashes when the motor controller transmits the
data to the serial link transmit line. It can be used for the fault
finding the serial link.
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B8G000880_E - Technical data