Pilz PMCprotego D.72/000/0/0/2/208-480VAC - Manual (Page 80)

4.4 Expansion cards
4 Function Description
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Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: [email protected]
4-46
Timing diagram for the incremental encoder signal:
 a: Edge spacing
≥
0.2
μ
s
 tv: Edge steepness
≤
0.1
μ
s
 NI – td: Delay
≤
0.1
μ
s
 |
Δ
U|
≥
2 V/20 mA
 Default count direction: Upwards, facing the motor axis when rotating
clockwise
][Funktion_Encoder_Emu_SSI
Output of SSI signals
Functions:
With this encoder emulation, positional data for the SSI interface is pre-
pared from the existing output signals from the resolver or SinCos en-
coder.
 A max. 32 Bits are transferred.
 Single-turn: The leading 12 to 16 Bits are zero, the following 16 Bits
indicate the position. On 2-pole resolvers the position value refers to
a full revolution of the motor; on 4-pole resolvers it refers to half a rev-
olution and on 6-pole resolvers to one third of a revolution.
Parameter
ENCMODE Encoder type Resolution Zero pulse
1 = incremental encoder Resolver 256 … 4096 (2
8
... 2
12
) One per revolution (only
when A = B = 1)
SinCos encoder 256 … 524288 (2
8
… 2
19
) One per revolution (only
when A = B = 1)
3 = Incremental encoder in-
terpolation SinCos encoder 4 ... 256 (2
2
... 2
7
)
TTL counts * resolution of
encoder
Encoder signal passed from
X1 to X5
A
B
NI
5 V
5 V
5 V
a a a a
tv tv
td td
90°
180°
360°