Siko MSK320R, Installation Manual, Page: 25 / 32

MSK320R
Installation English
MSK320R · Date 30.01.2018 · Art. No. 88942 · Mod. status 42/18
25
4.5 Electrical installation
Destruction of parts of equipment and loss of regulation control
` All lines for connecting the magnetic sensor must be shielded.
` Current linkage: don't connected or removed live.
` Perform wiring work in the de-energized state only.
`
Use strands with suitable ferrules.
` Wiring to the screen and ground (0 V) must be secured to a good
point. Ensure that the connection of the screen and earth is made to a
large surface area with a sound connection to minimise impedance.
` Prior to switching on check all mains and plug connections.
` Switch on operating voltage together with downstream electronics (e.
g., control unit).
Basically, all connections are protected against external interference.
Choose a place of operation that excludes inductive or capacitive inter-
ference influences on the magnetic sensor. When mounting the system
keep a maximum possible distance from lines loaded with interference. If
necessary, provide additional installations including screening shields or
metallized housings. Contactor coils must be linked with spark suppres-
sion.
` Pay attention to the maximum length of the connection cable between
sensor and downstream electronics.
`
Do not use tinned strands in connection with screw clamp connec-
tions.
Connection note acc. to RS422 standard
It is important to ensure that the channels are terminated with a termi-
nating resistor of 120 ohms at LD (5V).At 12V or 24V, 1 kohm or 1,5 kohm
should be used.
Fig. 9: Connection note
120 Ohm
0.5 W
120 Ohm
0.5 W
B1
A/1
A1
B/1
4
20
3
11
4
2
1
5
10
9
8
7
11 6
120 Ohm
0.5 W
120 Ohm
0.5 W
B2
A/2
A2
B/2
WARNING
NOTICE
NOTICE
NOTICE