Screw Terminal Base (S Type) - ABB Symphony Harmony Series Instruction

I/O Block
screw terminals accommodate wire lugs and the clamp termi-
nals accommodate stripped wires. Figure
screw terminal base and Figure
nal base.
Figure 3-11. Screw Terminal Base (S Type)
The terminals accept wiring with a cross-sectional area of up to
3.3 square millimeters stranded (12 AWG stranded). The num-
ber of terminals depends on the number and types of I/O
channels.
To simplify the installation process, the terminals are clearly
marked to identify positive (+) and negative (–) polarity, and
three-wire RTD, normally open relay contact, and normally
3 - 16
NOTE: A DIO block uses an R type base to connect its digital outputs to an
RLY block. When an RLY block is connected, the DIO block outputs drive either
electromechanical or solid state relays. The R type base has screw or clamp
terminals for digital input wiring, and a connector to cable the digital outputs to
the RLY block.
3-11 shows the
3-12 shows the clamp termi-
T 01 46 1 A
WBPEEUI240751C0