Input and output terminals
Sensor bus terminal block
The sensor bus terminal block is a brown, removable, 4-terminal plug that fits only into the brown,
board-mounted sensor bus jack. Wire the removable sensor bus terminal block plugs on the
ZEC510 and other field devices in a daisy-chain configuration using 4-wire twisted, shielded cable as
shown in Figure 3 and Figure 4.
Figure 3: Sensor bus terminal block wiring
Figure 4: Sensor bus daisy chaining configuration
Table 2: Sensor bus daisy chaining configuration
1
Terminating device on the sensor bus
2
Sensor bus terminal block plug on the terminating device
3
Daisy-chained device on a sensor bus segment
4
Sensor bus terminal block plug on the daisy-chained device
5
Cable shield connection
6
Connects to the next device on the sensor bus. Connects to the NS-xxxx sensors. See the
section for a list of the NS-xxxx sensors.
Zone bus terminal block
The zone bus terminal block is a gray, removable, 4-terminal plug that fits only into the black,
board-mounted, zone bus jack. Wire the removable zone bus terminal block plugs on the ZEC510
and other zone bus controllers in a daisy-chain configuration using 3-wire twisted, shielded cable,
as shown in Figure 5 and Figure 6.
Verasys ZEC510 VAV Controllers Installation Guide
10
