Edwards nEXT nEXT85 - Figure 15 Motor Controller Status Information; Figure 16 Logic Interface Connections - RS232 Serial Control

The soware in the pump can operate with the other pumps connected to a single serial
link master. This is a mul-drop mode. The RS485 opon is recommended for the mul-
drop mode. When the RS232 opon is selected, more hardware is necessary to link
number of pump units to a single serial link master. A concept drawing of one possible
arrangement is shown in Figure: Conceptual diagram for mul-drop connecon using
RS232 interface on page 53. When the RS485 opon is selected, it is easy to connect
number of pumps to a single master. Refer to Figure: RS485 mul-drop connecon on
page 54.
Figure 15 Motor controller status informaon
1. Normal LED 2. Status LED
3. Alarm LED 4. Accessory connector
5. Serial receive LED 6. Serial transmit LED
7. Standby speed increase buon 8. RS232 / RS485 slide switch
9. USB connector 10. Standby speed decrease buon
1. Normal LED 2. Status LED
3. Alarm LED 4. Accessory connector
5. Serial receive LED 6. Serial transmit LED
7. Standby speed increase buon 8. RS232 / RS485 slide switch
9. USB connector 10. Standby speed decrease buon
Figure 16 Logic interface connecons - RS232 serial control
1. RS232 interface on control equipment 2. 24 ‑ 48 V d.c. electrical supply
3. Fuse 4. nEXT pump logic interface
1. RS232 interface on control equipment 2. 24 ‑ 48 V d.c. electrical supply
3. Fuse 4. nEXT pump logic interface
Page 46
B8G000880_D - Installaon