Panasonic A4P Series User Manual
43
[Preparation]
Preparation
Interface Circuit
Input Circuit
Output Circuit
• Connect to contacts of switches and relays, or open collec-
tor output transistors.
• When you use contact inputs, use the switches and relays
for micro current to avoid contact failure.
• Make the lower limit voltage of the power supply (12 to 24V)
as 11.4V or more in order to secure the primary current for
photo-couplers.
photo-couplers.
Connection to sequence input signals
SI
12 to 24V
1 COM+4.7k
Ω
SRV-ON etc.
Relay
1 COM+4.7k
Ω
12 to 24V
SRV-ON etc.
R [k
Ω
] =
V
DC
[V]
–
2.5[V]
10
12 to 24V
COM–
17
ALM,
COIN etc.
COIN etc.
SO1
Max. rating 30V,50mA
12 to 24V
COM–
17
ALM,
COIN etc.
COIN etc.
SO1
Max. rating 30V,50mA
Install toward the direction.
or
• The output circuit is composed of open collector transistor
outputs in the Darlington connection, and connect to relays or
photo-couplers.
photo-couplers.
• There exists collector to emitter voltage, V
CE
(SAT) of approx.
1V at transistor-ON, due to the Darlington connection of the
output or. Note that normal TTL IC cannot be directly connec-
ted since it does not meet VIL.
output or. Note that normal TTL IC cannot be directly connec-
ted since it does not meet VIL.
• There are two types of output, one which emitter side of the
output transistor is independent and is connectable individual-
ly, and the one which is common to – side of the control pow-
er supply (COM–).
ly, and the one which is common to – side of the control pow-
er supply (COM–).
• If a recommended primary current value of the photo-coupler is
10mA, decide the resistor value using the formula of the right Fig.
Sequence output circuit
SO1
• Feeds out the divided encoder outputs (A, B and Z-phase) in
differential through each line driver.
• At the host side, receive these in line receiver. Install a termi-
nal resistor (approx. 330
Ω
) between line receiver inputs with-
out fail.
• These outputs are not insulated.
Line driver (Differential output) output
PO1
• Feeds out the Z-phase signal among the encoder signals in
open collector. This output is not insulated.
• Receive this output with high-speed photo couplers at the
host side, since the pulse width of the Z-phase signal is nar-
row.
row.
Open collector output
PO2
For the recommended primary current value, refer to the data sheet of apparatus or photo-coupler to be used.
AM26LS32 or equivalent
AM26LS31 or
equivalent
A
B
Z
12
11
OA
+
OA
–
OZ
+
OZ
–
OB
+
OB
–
13
9
26
GND
10
14
Connect signal ground of the host
and the driver without fail.
and the driver without fail.
16
26
CZ
Max. rating 30V,
50mA
GND
High speed
photo-coupler
(TLP554 by Toshiba or equivalent)
photo-coupler
(TLP554 by Toshiba or equivalent)
represents twisted pair.
represents twisted pair.