Kramer RC-74DL, User Manual

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RC-74DL - Overview 7
# Feature Function
7 K-NET1 Connector Connect the GND pin to the Ground connection; pin
B (-) and pin A (+) are for RS-485, and the +12V pin
is for powering the unit
The ground connection is sometimes connected to the
shield of the RS-485 cable (in most applications, it is
not connected)
8 K-NET2 Connector Connect the GND pin to the Ground connection
(see
Section
4.3
; pin B (-) and pin A (+) are for
RS-485, and the +12V pin is for powering the unit
9 Ring Tongue Terminal Grounding
Screw Connect to grounding wire (optional), (see
Section
4.3
)
10 GP I/O Terminal Block s (1 and 2) Connect to various sensors, switches, LEDs, or
relays
11 Rel (Relay) Terminal Blocks Connect to low-voltage relay-driven devices (from 1
to 4)
12 Switch For internal factory use only
13 RS-485 Termination Switch
Slide down for RS-485 termination with 120

; slide
up for no RS-485 Line Termination
The first and the last units on the RS-485 line should
be terminated (ON). Other units should be
unterminated (OFF)
14 RS-485 Terminal Block Connector Connect to the RS-485 detachable terminal block
on a switcher or PC
15 RS-232 Terminal Blocks Connect to the RS-232 devices (from 1 to 3)
16 IR Output Terminal Blocks Connect to IR emitter cables (from 1 to 2)