Specifications

Analog Input Modules

31007715 6/2008 179

STB ACI 1400 Field Wiring

Summary The STB ACI 1400 module uses two six-terminal field wiring connectors. Analog

sensors 1, 2, 3, and 4 are wired to the top connector, and analog sensors 5, 6, 7,

and 8 are wired to the bottom connector. The choices of connectors and field wire

types are described below, and some field wiring options are presented.

Connectors Use a set of either:

z two STB XTS 1100 screw type field wiring connectors (available in a kit of 20)

z two STB XTS 2100 spring clamp field wiring connectors (available in a kit of 20)

These field wiring connectors each have six connection terminals, with a 3.8 mm

(0.15 in) pitch, between each pin.

Field Sensors The STB ACI 1400 module support eight single-ended 2-wire analog sensors. It

handles analog inputs in the ranges of 4 to 20 mA or 0 to 20 mA. Data on each

channel has a resolution of 15 bits + sign.

Field Wire

Requirements

Individual connector terminals accept one field wire. Use wire sizes in the range

0.5...1.5mm

(24 ... 16 AWG).

Shielded twisted-pair cable is required to meet CE. (See the Advantys STB System

Planning and Installation Guide (890 USE 171) for an illustrated example of an

island segment with an EMC kit making the analog I/O modules CE compliant.) The

shield should be tied to an external clamp that is tied to functional earth.

We recommend that you strip at least 9 mm from the wire’s jacket for the module

connection.

Note: If you are wiring two return lines directly into one pin on the connectors, you

need to use STB XTS 1100 screw type field wiring connectors, as illustrated in the

field wiring examples that follow.

Note: If you are wiring two return lines directly into one pin on the connectors, you

need to use stranded wires that are no larger than 0.8 mm

(18 AWG). Both wires

must be the same wire gauge.

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