Logic Interface Connector - Edwards nEXT730D Instruction Manual

be achieved if the power supply delivers higher current, up to a maximum in accordance
with Table: Logic interface technical
If the facility to adjust the power limit setting is not available, use a power supply
capable of delivering enough current to meet the Edwards factory default power limit
setting, shown in

4.9 Logic interface connector

nEXT pumps have a 15-way logic interface connector on the end of the logic interface
cable. Use a suitable connector mating half (not supplied) to connect the nEXT pump to
the customer equipment. Refer to the following table for the connector mating half
type.
Table 10 Logic interface technical data
Logic interface item
Connector
Start and serial enable control inputs:
Enabled control voltage: low (close)
Disabled control voltage: high (open)
Standby control input:
Enabled control voltage: low (close)
Disabled control voltage: high (open)
Analogue output:
Output voltage
Voltage accuracy
Output current
Normal status output:
Type
< Normal speed (default 80%)
³ Normal speed
Current rating
B8J200880_D
300812671_002_C3
B8J200880_D - Technical data
Table: Logic interface technical
*
Page 35
data.
data.
15‑way D‑type male
0 to 0.8 V d.c. (Iout = 0.55 mA nominal)
4 to 26.4 V d.c. (internal pull up to 6.4 V
nominal)
0 to 0.8 V d.c. (Iout = 0.29 mA nominal)
4 to 26.4 V d.c. (internal pull up to 3.2 V
nominal)
0 to 10 V d.c. (directly proportional to
measured parameter)
Motor speed: 0 ‑ 820 Hz (0‑100%) for
nEXT730/930D,
0 ‑ 700 Hz (0‑100%) for nEXT1230H
Motor power: 0 ‑ 500 W for
nEXT730/930D,
0 ‑ 660 W for nEXT1230H
Motor temperature: 0 ‑ 100 °C
Controller temperature: 0 ‑ 100 °C
Bearing temperature: 0 ‑ 100 °C
± 0.2 V
£ 5 mA for specified accuracy
Open collector transistor plus pull up resis-
tor. Refer to Figure: Interface circuits for
nEXT turbo pump controllers
Off (2.2 kW pull up to 12 V d.c.)
On (< 0.8 V d.c. sinking 20 mA)
20 mA to 0 V
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