Input Wiring - Carrier WTC-B-207 Installation Instructions Manual

Power supply connections for all units
Power connection without Fuse Holder
NOTE: Number of blocks may vary depending on unit confi guration!

5. Input wiring

Input wiring is common to all WTC types.
Each controller has physical connections for two
(2) inputs (marked as DIx for Digital Inputs on
X9 connector) that are confi gured using a
network tool or user interface (RCI-D).
All input wiring must be connected using the
provided detachable connectors.
Connectors allow the use of cables up to 1.5 mm².
8
Power connection with the optional Fuse Holder
X9 wiring digital inputs (DI1, DI2)
This input confi guration is used to monitor
digital dry contacts as, for instance, window
contact.
External dry
contacts
Figure 1: X9 Digital input – Dry contact connection
(1) VREF
(2) COM
(3) DI2
(4) DI1