Cabling requirements
The BAS port on the SC-EQ board in the electrical
cabinet of the leader module unit is the communication
interface between the unit and the BMS. The customer
needs a RS-232/RS-485 converter between the SC-EQ
BAS port and the customer BAS. The communication
line has polarity: A is connected to converter A (or +),
B is connected to converter B (or -). To avoid malfunc-
tion, ensure it is connected correctly.
outlines the cable length and type
for interconnections.
Figure 19:
Leader-follower modules communication wiring connection
Table 4:
Interconnection cable length and type
Total length
L = L2 + L3 + ... + Ln (n ≤ 32, m)
L < 100 m
100 m < L < 500 m
L > 500 m
Cable type
Shielded twisted pair cable
2 x 0.75 mm
2
Shielded twisted pair cable
2 x 1.0 mm
2
Contact Quantech
Figure 20:
Converter between SC-EQ BAS port and customer BAS
Quantech
18
Form QTH1-QSG1
Issue date: 12/20/2023
