Edwards nXDS10i nXDS15i, Instruction Manual

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Logic interface description
Type Open collector transistor plus pull up
resistor.
< Normal speed (default 80%) OFF (4.7 k pull up + diode to 12 V d.c.)
³
Normal speed ON (< 0.8 V d.c. sinking 10 mA)
Maximum current rating 10 mA
Maximum voltage rating 28.8 V d.c.
FAIL status output:
Type Open collector transistor plus pull up
resistor.
Fail OFF (4.7 k pull up + diode to 12 V d.c.)
OK ON (< 0.8 V d.c. sinking 10 mA)
Maximum current rating 10 mA
Maximum voltage rating 28.8 V d.c.
Analogue 10 V reference
+ 10 V d.c. analogue voltage reference
Unipolar output with diode protection
Voltage accuracy ± 2% full scale
Output current
£
5 mA for specified accuracy
* Mating half of connector not supplied.
Table 12
Logic interface connector pins
Pin
Number
Signal Polarity Use
1 Analogue Speed
Enable
‑
control Input
- Connect to Pin 2 (0 V) to enable
analogue speed control via Pin 9.
2 0 V Control Reference - 0 V reference for ALL control and status
signals listed within this table.
3 START / STOP - Control
Input
- Connect to Pin 2 (0 V) to START the
nXDS pump system.
4 STANDBY - Control
Input /
Serial-RX/RS485 A-
- Connect to Pin 2 (0 V) to enable
STANDBY speed when the SERIAL
ENABLE control input is inactive.
5 Serial Enable - Control
Input
- Connect to Pin 2 (0 V) to enable serial
communications.
6 RS232/RS485 - Control
Input
- Default configuration is RS232 with Pin
6 unconnected.
Connect to Pin 2 (0 V) to enable RS485
serial communications.
7 FAIL
‑
Status Output/
Serial
‑
TX/RS485 B+
- Logic HIGH when a fail or fault
condition exists and the SERIAL ENABLE
control input is inactive.
8 0 V Control Reference - 0 V reference for all control and status
signals listed within this table.
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A73501880_G - Technical data