YOKOGAWA CENTUM CS, Technical Information

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3. Cabling
3-66
TI 33J01J10-01EN
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Connecting Signal Cables with Pulse Input Module AAP135
The AAP135 receives contact ON/OFF, voltage pulse and current pulse. Refer to the figures
below for details on how to connect signal cables since the items to be set by the system
generation builder depend on the input pulse types.
l
When Receiving No-Voltage Contact Signals (1)
For the relay contacts or transistor contacts, connect as follows.
Pulse input frequency should be 0 to 800 Hz. Max. frequency differs due to the wiring effect, etc.
AAP135
SW1
RL SW2
FIL
12 V DC/24 V DC
pull-up resistor
IN

A
IN

B
IN

C
Transmitter
F030605.ai
(SW1: OFF, SW2: ON for relay contact
if necessary)
Setting Items by the system generation builder
SW1 (RL) : OFF (No terminating resistor)
SW2 (FIL) : ON if necessary (*1)
*1: When there is a chattering noise at a mechanical relay, set the SW2 to ON to eliminate the noise.
Figure No-Voltage contact Input (1)
A receivable maximum frequency and minimum pulse width of AAP135 depend on redundancy
configuration of AAP135.
Table Receivable minimum pulse width (when synthetic capacity of connected wiring and transmitter
is less or equal than 1000 pF)
I/O module redundancy Input frequency
Minimum input pulse width
(Contact off time)
Single 0 to 800 Hz 625 μs
Duplexed 0 to 600 Hz 833 μs
F030617.ai
0
0.5
1
1.5
2
2.5
3
0 5000 10000 15000 20000 25000 30000
Input pulse width
(Contact off time) [msec]
Synthetic capacity of connected wiring and transmitter [pF]
Min.pulse width characteristic (Duplexed)
（ 1 ）
（ 2 ）
0
100
200
300
400
500
600
700
800
900
0 5000 10000 15000 20000 25000 30000
Input Frequency [Hz]
Synthetic capacity of connected wiring and transmitter [pF]
Max. input freq. Characteristic (Single)
Min.pulse width characteristic (single)
Max. input freq. Characteristic (Duplexed)
（ 1 ）
（ 2 ）
Single Area Duplexed
（１）
（２）
Receivable Receivable
I/O module redundancy
Receivable Not receivable
Figure Receivable minimum pulse width (when synthetic capacity of connected wiring and transmitter
is more than 1000pF)
Oct. 5, 2018-00