Mitsubishi Electric MELDAS 60 Series Maintenance Manual page 99

When devices (pulse generators) other than manual pulse generators (HD60) are connected to the
additional I/O units, use within the ranges shown in the following specifications. The commercially-
available manual pulse generators include the 25 pulse/rev type and 100 pulse/rev type.
The MELDAS60/60S Series internally multiplies one pulse by four, so use the 25 pulse/rev type.
Input/output conditions
Input waveform
Input/output circuit
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6. CONNECTION OF BASE I/O UNIT
6.9 Connection of Manual Pulse Generator
Input pulse signal type
Input signal voltage
Max. input pulse frequency
Power voltage for pulse
generators
Max. output current
No. of pulses per rotation
The input waveform phase difference must be ±T/10 (T: cycle) or less.
A (B) phase
B (A) phase
a. b. c. d. e: A phase or B phase rising edge (falling edge) phase difference = T/4 ± T/10
T: A or B phase cycle (Min. 10µs)
Connector pin No.
HA1 1
HA2 3
5
HA3
Input
2
HB1
4
HB2
6
HB3
12VDC
10,12,14
Output
9,11,13
0V(GND)
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90° phase difference between A phase and B phase.
(Refer to waveform (e) below.)
H-level 3.5V to 5.25V, L-level 0V to 0.5V or less
100kHz
12VDC ± 10%
300mA
25 pulse/rev (25 pulse/rev for HD60)
a b c d
T
+5V
Ω
470?
Ω 4700pF
220?
+5V
0V(LG)
+5V
Ω
470?
4700pF
Ω
220?
0V(LG)
I-86
e
Control circuit