2 — INSTALLATION AND WIRING
Curtis 1232E/34E/36E/38E & 1232SE/34SE/36SE/38SE Manual, os 31 – May 2017 Return to TOC
pg. 14
DIGITAL INPUT SPECIFICATIONS
Name Pin
Logic
Thresholds
Input
impedance*
Voltage range† ESD Tolerance
Switch 1 24
Rising edge=
4.4V max
Falling edge=
1.5V min
24-36V models:
7.0 kΩ, 7.2 kΩ
36-48V models:
10.8 kΩ, 11.2 kΩ
48-80V models:
25.2 kΩ, 27.3 kΩ
72-96V models:
n/a, 29.4 kΩ
–10V to
(MaxV + 10 V)
± 8 kV
(direct strike)
Switch 2 8
Switch 3 9
Switch 4 10
Switch 5 11
Switch 6 12
Switch 7 22
Switch 8 33
Switch 16 14
Digital Out 6 19
150 kΩ to
300 kΩ
–5V to
(MaxV + 10 V)
Digital Out 7 20
Driver 1 6
Driver 2 5
Driver 3 4
Driver 4 3
Prop Driver 2
*The rst value is for 1232E/SE and 1234E/SE controllers, and the second value is for 1236E/SE and 1238E/SE controllers.
†“MaxV” in this and the following tables is the controller’s maximum voltage; see Table D-1 for the maximum voltage of
each model.
NOTE: The voltage at the switch inputs 3–8 and 16 must be above the high threshold or below the low threshold for proper operation.
Allowing these inputs to fall between these thresholds for more than 100 milliseconds could result in a Supervisor Fault (fault code 77).
Primary
μP
SWITCH INPUTS
1-8, 16
(pins 8-12, 22,
24, 33, 14)
*
24-36V models = 7.5 kΩ, 36-48V = 12 kΩ, 48-80V = 33 kΩ
100 kΩ
100 kΩ
5V clamp
DRIVER INPUTS
(pins 6, 5, 4, 3, 2)
100 kΩ
100 kΩ
μP
5V clamp
DIGOUT INPUTS
(pins 19, 20)
Supervisor
μP
100 kΩ
127 kΩ
3.3V clamp
Model
specific
*
DIGITAL INPUT IMPEDANCE CIRCUITS
Primary
μP
SWITCH INPUTS
1-8, 16
(pins 8-12, 22,
24, 33, 14)
*
24-36V models = 7.5 kΩ, 36-48V = 12 kΩ, 48-80V = 33 kΩ, 72-96V = 36 kΩ
150 kΩ
150 kΩ
5V clamp
DRIVER INPUTS
(pins 6, 5, 4, 3, 2)
150 kΩ
150 kΩ
μP
5V clamp
DIGOUT INPUTS
(pins 19, 20)
Supervisor
μP
150 kΩ
191 kΩ
3.3V clamp
Model
specific
*
1232E/SE and 1234E/SE
controllers
1236E/SE and 1238E/SE
controllers
13
24
1
23
35
12
Quick Links:
Figure 3 wiring diagram p.12
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