Panasonic MINAS A3 Series - Manual (Page 4)

134
AI Analogue Command Input
• There are three analogue command inputs of SPR/RTQR
(14 pins), CCWTL (16 pins) and CWTL (18 pins).
• The maximum permissible input voltage is
±
10V. For the
input impedance of these inputs, see the right figure.
• If you make a simplified circuit comprising a variable re-
sistor (VR) and resistor (R), refer to the right figure.
When the variable range of each input is -10V to +10V,
the VR should be a B type resistor of 2k
Ω
(min.1/2W).
The R should be 200
Ω
(min.1/2W).
• The A/D converters for these inputs should have the fol-
lowing resolution.
+12V
SPR/TRQR
CCWTL
CWTL
R
14 20k Ω
10k Ω
GND
GND
10k Ω
10k Ω
10k Ω
ADC
1
ADC
2
15
16
17
18
R
VR
-12V
+
-
+
-
+
-
Interface Circuit
Input Circuit
CN X5 Connector
SI Connecting to
sequence input signals
• Connect to a contact of switch and relay, or a transistor
of an open collector output.
• Use a switch or relay for micro current so that insufficient
contact can be avoided.
• Lower limit of the power supply (12 to 24V) should not be
less than 11.4V in order to secure the appropriate level
of primary current of the photo coupler.
SI
12–24V 7 COM+4.7k Ω
Servo-ON or
other input
Relay
7 COM+4.7k Ω 12–24V
Servo-ON or
other input
1) ADC1 (SPR and TRQR) : 16 bits (including one bit for sign)
2) ADC2 (CCWTL and CWTL) : 10 bits (including one bit for sign)