Yokogawa 415 Steam and Gas User Manual
Page 65
Switch Settings
The following switch settings are recommended for different input signal types.
Input Signal Type
Input Terminals
Switch Settings
+
-
1
2
3
4
5
6
7
8
a. Logic Signal CMOS,
TTL, Pulse
9
8
off off off off on off off off
b. Open Collector or Reed
switch
9
8
off off off off on
off on
off
c. Naeur Proximity (set
DC out to 8 volts)
11
9
on
off on
on
on
off off off
d. Switch or Reed Switch
with debounce circuit
(200Hz max)
9
8
off off off off on
off on
on
e. Coil (20mV P-P
minimum)
9
8
off on
off off off off off off
f. Coil (low Impedance)
22mV pp minimum
9
8
on
on
off off off off off off
General Specification
Switching Threshold:
2.5 Volts (except for input type c, e and f)
Maximum Input Voltage:
50V peak
Input Impedance
Input type a:
100K
Input types b & d:
10K
Input type c:
1K
Input type e:
100K
Input type f:
2.4K
Input Circuits 63