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Chapter 9
Pulse input mode and encoder connections
A
To set "90 degrees shift pulse (01)" or "Forward and reverse command and pulse (03)" as the
"Pulse input mode selection [P004]", set "Pulse input B [PLB] (85)" to input terminal [7]. When
doing so, the active state (NO/NC) setting is disabled. Also note that hardware specifications
different between the [PLA] input terminal and the [PLB] input terminal. Hardware specifications,
recognition of rotation direction, and wiring for the [PLA]/[PLB] terminals are shown below.
■
Hardware specifications for the [PLA]/[PLB] terminals
Pulse input mode [P004]
Single phase pulse input (00)
90 degrees shift pulse (01)
Forward and reverse
command and pulse (03)
■
Recognition of feedback rotation direction
Pulse input mode [P004]
Single-phase pulse input (00)
90 degrees shift pulse (01)
Forward and reverse
command and pulse (03)
■
Phase AB 90° phase shift pulse wiring ([P004]=01)
Wire the phase AB 90° phase shift pulse input to the [PLA] and [PLB] terminals as shown in the
figure below. As the [PLB] terminal is also used with input terminal [7], use all intelligent input
terminals, including the [PLB] terminal, with source logic (voltage output-type encoder or PNP
open collector-type encoder). In addition, set the input voltage high level within intelligent input
terminal specifications (18 to 24 VDC).
Voltage output-type or PNP
open collector-type encoder
[PLA] terminal
(5 to 24 VDC/Max. 32 kHz)
Single-phase pulse
(PNP open collector or voltage output-type encoder)
Phase A pulse
(PNP open collector or voltage output-type encoder)
Single-phase pulse
(PNP open collector or voltage output-type encoder)
RUN command
Forward rotation
Reverse rotation
[FW]
ON
OFF
Either ON
Either ON
Forward rotation:
90° advance
A
Encoder
B
Vcc
GND
9-5-15
Inverter Functions
[PLB] terminal
(24 VDC/Max. 32 kHz)
Phase B pulse
(PNP open collector or voltage output-type encoder)
Direction signal
(Sink/source transistor or changeover switch)
Recognition of feedback
[PLB]
[RV]
OFF
-
Forward rotation
ON
-
Reverse rotation
Encoder detection
-
(90° phase difference)
Forward rotation
OFF
(subject to [PLB] terminal)
Reverse rotation
ON
(subject to [PLB] terminal)
P24
8/PLA
510 Ω
3.9 kΩ
5.1 V
7/PLB
4.7 kΩ
1 to 6
4.7 kΩ
PLC
L
-
rotation direction
WJ-C1
6.2 kΩ
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