Lika IF50, Руководство пользователя

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IF50
6.2 Impulse levels and symmetric / asymmetric input formats
Positions 5 and 7 of DIL1
along with
positions 3 to 6 of DIL2
allow the
operator to set the full variety of options suited to customize levels and formats.
NOTE
1. The tables below use the following definitions: „0“ = switch OFF, „1“ =
switch ON; „x“ means negligible position.
2. Switch settings refer to impulse inputs A / B only, but the CONTROL
input (terminal 10) always provides HTL / PNP format, i.e. you must
apply a 10 - 30 volts positive voltage to activate the function.
3. When you use 2-wire sensors with NAMUR characteristics, connect the
positive pole of the sensor to the corresponding input terminal and the
negative pole to GND.
4. When you find (A) or (B), this indicates that the inputs expect
asymmetric (single-ended) signals and you will not need to provide the
corresponding inverted signals.
5. On the other side when you find (A and /A) or (B and /B), this indicates
that the inputs expect symmetric differential signals according to RS-
422 standard, i.e. it is compulsory to apply also the inverted signals.
6.2.1 Standard settings
If you just use encoders or sensors according to common industrial standards,
and further if all input signals should have the same level, you just can use one
of the following three standard settings and do not need to consider the whole
list of options for the switch settings.
DIL1 DIL2 Input characteristics Encoder / sensor type
5 6 7 3 4 5 6
0 0 0 0 0 0
Asymmetric HTL input (A, B), 10 - 30 V
level, NPN (switching to -) or Push-Pull or
NAMUR characteristics Standard HTL encoders,
proximity switches, photo
switches, etc.
1 0 0 0 0 0
Asymmetric HTL input (A, B), 10 - 30 V
level, PNP (switching to +) or Push-Pull
characteristics
PNP proximity switches,
photo switches, etc.
0 1 0 0 0 0
Symmetric TTL signals or RS-422 signals (A,
/A), (B, /B) (differential, including inverted
signal) Standard TTL encoders
providing A, /A, B, /B
output channels
MAN IF50 I_E 1.0.odt 6 - DIL switch settings 50 / 80