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Installation and Configuration Manual 33
Electrical Connections
Installation Using ADView and ProLink IIElectrical ConnectionsIntroduction Installation Using ADView and ProLink IIElectrical ConnectionsIntroduction Installation Using ADView and ProLink IIElectrical ConnectionsIntroduction Installation Using ADView and ProLink IIElectrical ConnectionsIntroduction
Micro Motion recommends the K2–ADE (Terminal Block type or DIN connector type) converter,
manufactured by KK Systems Ltd that will work with Windows 98, NT, 2000 and XP. This converter
is available through Micro Motion when you purchase the ADView software. The ADView software
package includes the latest Windows version of the software, plus a K2-ADE RS-485/RS-232
converter (Terminal Block version).
The K2-ADE converter derives its power from the PC’s RS-232 port RTS or DTR line, which must be
held permanently in the high state. This is normally adequate for short distances where there are only
a few devices on the network. However, the ability of the port to supply sufficient power is not
guaranteed, especially for laptop PCs, and it may be necessary to connect an external power supply.
This may also be necessary if using Windows NT, 2000 or XP.
To check the voltage levels, measure the voltages on the RTS input (pin 7) and the DTR input (pin 4)
while the converter is connected to the PC (or other RS-232 device). This procedure needs a
break-out box (not supplied). Whichever input is powering the converter must have at least +6 V
during communications. Where the power is found to be insufficient, a 9 VDC supply can be
connected between Pin 9 (+) and Pin 5 (GND) of the RS-232 connector. Connections are shown in
Figure 3-8. See also the manufacturer’s technical information for details.
Figure 3-8 Powering the converter with an external 9 VDC supply
For permanent installations and cables distances greater than 100 m
For permanent installations, and where the network length is more than 100 m or so, Micro Motion
can supply the following DIN-rail mounted device from KK Systems Ltd.
• KD485–ADE
The KD485–ADE is three-way isolated, providing isolation between the two ports and the power
supply. It requires a +7 to +35 V power supply and typically takes 1 to 2 W; (power consumption is
largely independent of supply voltage). It is capable of working with Windows 98, NT, 2000 and XP.
For a PC running Windows NT/2000/XP, the RTS connection can be omitted.