ero electronic TKS Manuel De Service page 11

SERIAL SERIAL SERIAL SERIAL SERIAL INTERFACE INTERFACE INTERFACE INTERFACE INTERFACE
RS-485 interface allows to connect up to 30 devices with one
remote master unit.
I
A/A' A'/A
N
11
S
T
R B/B' B'/B
10
U
M
E
COMMON
N
9
T
Fig. 9 - RS-485 WIRING
The cable length must not exceed 1.5 km at 9600 BAUD.
N O T E S : N O T E S N O T E S N O T E S N O T E S
1) This is an RS485 isolated interface.
2 ) The following report describes the signal sense of the
voltage appearing across the interconnection cable
as defined by EIA for RS-485.
a) The "A" terminal of the generator shall be negative
with respect to the "B" terminal for a binary 1 (MARK
or OFF) state.
b) The "A" terminal of the generator shall be positive
with respect to the "B" terminal for a binary 0
(SPACE or ON)
XKS-1-B0.pmd 5
D) POWER LINE WIRING D) POWER LINE WIRING D) POWER LINE WIRING D) POWER LINE WIRING D) POWER LINE WIRING
N (L2)
13
12
L (L1)
M
A
S Fig. 10 POWER LINE WIRING
T
E 100V to 240V AC 50/60Hz (-15% to + 10% of the nominal
R value).
24 V AC/DC (+ 10 % of the nominal value).
NOTES NOTES NOTES NOTES NOTES:
1 ) Before connecting the instrument to the power line,
make sure that line voltage corresponds to the
description on the identification label.
2 ) To avoid electrical shock, connect power line at the
end of the wiring procedure.
3 ) For supply connections use No 16 AWG or larger wires
rated for at last 75 °C.
4 ) Use copper conductors only.
5 ) Don't run input wires together with power cables.
6 ) For 24 V DC the polarity is a do not care condition.
7) The power supply input is NOT NOT fuse protected. NOT NOT
NOT
Please, provide it externally.
Power supply Type Current
24 V AC/DC T 500 mA
100/240 V AC T 63 mA
When fuse is damaged, it is advisable to verify the
power supply circuit, so that it is necessary to send
back the instrument to your supplier.
8 ) The safety requirements for Permanently Connected
Equipment say:
- a switch or circuit-breaker shall be included in
the building installation;
- It shall be in close proximity to the equipment
and within easy reach of the operator;
- it shall be marked as the disconnecting device for the
equipment.
NOTE: a single switch or circuit-breaker can drive more NOTE NOTE NOTE NOTE
than one instrument.
9 ) When a neutral line is present, connect it to terminal
13.
GB GB
GB GB GB 5
20/06/2005, 11.08
Voltage
250 V
250 V