YASKAWA VS-626M5, Instruction Manual, Page: 162 / 305

9.9 Stop Position Reference Signal Details
9 -13
9.9 Stop Position Reference Signal Details
The stop position reference input signal circuit, which controls the direction of the Magnetic Sensor orientation,
is the same as for the sequence input signal.
J
D1 to D12 (Stop Position Reference Signal)
12-bit Digital Reference Signal Function Selection: 1CN-19 to 1CN-30 will be the 12-bit Digital Refer-
ence if bit 07 of the C1-36 selection signals (SEL1) is turned OFF.
Bit 7
C1 − 36
The circuit operates when pins 19 to 30 of 1CN are turned ON.
D
Use these stop position reference signals when performing user-set position stop control (incremental
operation) using Magnetic Sensor orientation.
D
Stop position references are sent externally, taking the load shaft external home position to be 0.
D
Select the position references as either 12-bit binary or 3-digit BCD.
Incremental
Binary Sign: 1 bit − 2047 pulses to 2047 pulses
Incremental
Binary Sign: 1 bit
Data: 11 bits
2047 pulses to 2047 pulses
( − 000 to 7FF hexadecimal)
BCD Sign: 1 bit −
θ
to +
θ
BCD Sign: 1 bit
Data: 3 digits (11 bits)
θ
to +
θ
( − 799 to 799 decimal)
D
When the sign bit is ON, the sign is negative, and when the sign bit is OFF, the sign is positive.
D
θ
is determined using the sum of the 3-digit BCD data and the BCD stop position reference resolution
C3-12 (P
BCD
). The following equation must be satisfied,
θ
< 360
_
.
D
The relationship between the reference signals and the number of pulses is shown in the following
table.
Signal 1CN Pin Number Binary BCD
With Sign With Sign
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
19
20
21
22
23
24
25
26
27
28
29
30
1
2
4
8
16
32
64
128
256
512
1024
Sign
1
2
4
8
10
20
40
80
100
200
400
Sign
D
If using signed binary, the meaning of the signal will depend on the sign (+ or − ). If the sign is positive,
the total number of bit pulses input is added:
0 0 1 0 1 0 0 1 0 0 1
: : : :
256+ 64
+
8
+
1 = 329
If the sign is negative, the negative of sum of the number of bit pulses input is used:
− (256 + 64 + 3 + 1) = − 329
D
Binary references cannot be made above 180
_
. For BCD references, references above 180
_
are pos-
sible, depending on the setting in BCD stop position reference resolution C2-12 (P
BCD
), to a maximum
of
±
360
_
.
9