— 48 —
6F3A4768
3.3.4 Speed Pulse Signal Output (Single end type)
When the resolver or PLG is used, the speed signal can be output as pulse signal. (These pulse signals cannot
be output in the sensor-less vector control.) Fig. 3.3.3 shows the PLG pulse output circuit. The power for pulses
is supplied from an external power supply. Prepare this external power supply in a range of 15 V to 48 V.
The PLG pulse output consists of two phases, PGA and PGB. When the motor rotates in the normal direction,
the pulse has 90
°
-advance phase. The pulse signals (power supply level supplied from outside) are insulated
from the control power supply in the equipment through a photo-coupler.
The pulse output count per motor revolution can be set as follows. At this time, make the settings so that the
pulse count at 100% speed does not exceed 10 kHz. If it exceeds 10 kHz, this may cause the pulses not to be
transmitted.
(1) 1x type resolver is used.
$CS_RES_TYPE = 1
$CS_PGOUT:
Any of 64, 128, 256, 512, and 1024 is set.
<Example> When the 100%-speed is 1800 min
-1
.
$CS_PGOUT is determined so that (1800/60) x $CS_PGOUT
<
10000 is satisfied.
$CS_PGOUT
<
10000/(1800/60) = 333
Therefore, $CS_PGOUT = 256.
(2) 4x type resolver is used.
$CS_RES_TYPE = 4
$CS_PGOUT:
Any of 256, 512, 1024, 2048, and 4096 is set.
<Example> When the 100%-speed is 400 min
-1
.
$CS_PGOUT is determined so that (400/60) x $CS_PGOUT
<
10000 is satisfied.
$CS_PG_OUT
<
10000/(400/60) = 1500
Therefore, $CS_PGOUT = 1024.
(3) When PLG is used.
$CS_RES_TYPE = 1
(Always set this value to “1”.)
$CS_PGOUT = 0
(Always set this value to “0”.)
The output pulse count is the same as that input.
If the above setting is changed, always initialize the equipment (turn off the control power MCCB
“CONTROL”, and turn it on again) to make the newly set data valid.
TB
1-
22
TB
1-
21
TB
1-
23
TB
1-
20
TB
1-
19
TB
1-
18
PGA
PGB
+
15 V to 48 V 0 V
PG
ARND-3120
Fig. 3.3.3 Speed Pulse Signal Output Circuit
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