Product data
18
MeterBusTM Networking
The Meter Hub electrically isolates devices that supply power to the MeterBus
TM
, preventing
grounding problems.
(A) Supplies Power (B) Requires Power
SunSaver Duo Remote Meter (RM-1)
SunSaverMPPT TriStar Digital Meter 2 (TS-M-2)
TriStar TriStar Remote Meter 2 (TS-RM-2)
TriStarMPPT Relay Driver
SureSine
Table 2. Morningstar Device MeterBus
TM
Power Specications
One device from Table 2, Column A must be connected to Input Power Port B of the Meter •
Hub. Ports A and B are not isolated from each other, therefore, when Input Power Port B is
energized, Output Power Port A provides power to its device.
To link multiple hubs, Output Power Port A is connected to Input Power Port B on the next •
hub, thereby providing power.
A maximum of three devices can be powered off a single device from Column A. The •
Multiple-Hub diagram in Figure 20 illustrates this.
Only one device from Table 2, column A may be connected to each port on the Meter Hub.•
Table 2, Column B devices cannot be the only device connected to ports 1-4 (these ports •
do not provide output power).
To supply power to a device from Column B, you must connect a device from Column A to •
the device from Column B, and then connect that device (B) to a port on the Meter Hub.
Example Network #2 shows how to correctly achieve this.
3.3 Example Networks
3.3.1 Example #1 - Small Network
A typical small network is shown in Figure 17 below. The TriStar connected to Port B is electrical-
ly isolated from the TriStar on Port 1. This prevents differences in ground potential, disconnected
grounds, or differing system voltage to damage the network equipment or controllers. The TS
Remote Meter connected to Output Power Port A is powered from the TriStar connected to Port
B and is also isolated from Port 1.