![background image](http://html1.mh-extra.com/html/curtis/1356/1356_manual_2699543017.webp)
Curtis 1356/1356P CAN Expansion Module Manual,
Rev. A
13
2 — INSTALLATION & WIRING:
I/O Signal Specifications
Analog Inputs
The 1356 /1356P has five 0 – 15 V analog inputs. These inputs are scaled down
by 5.76, clamped to 3.3 V, and read by a 12-bit ADC internal to the MCU.
ANALOG INPUT SPECIFICATIONS
protected
voltage
signal
name
pin
voltage
input
impedance
range
Analog Input 1 J1-20
Nominal input voltage:
Voltage Input Type:
Analog Input 2 J1-9
0 – 15 V
about 21 kΩ
Analog Input 3 J1-21
Input maximum
Resistance Input Type
: -1 V to B+
Analog Input 4 J1-10
reverse voltage:
-1.7 V about 1 kΩ
Analog Input 5 J1-22
The maximum resistive input on each analog input is 7.5 kΩ. The resistive or
voltage type of analog input can be selected by a Curtis programmer (1313/1314)
or CAN SDO message.
These five analog inputs can also be used as digital inputs. A unique fea-
ture of these digital inputs is that the active high/low thresholds are completely
programmable. Thus, these inputs can be used with analog sensors to detect
conditions like over/under pressure, high/low level points, etc.
Encoder Inputs
Analog Inputs 4 and 5 can be configured as a quadrature encoder input (En-
coder A and B). This standard quadrature encoder input accepts open collector
encoders with pull-up resistors in the 1356 /1356P module. The encoder can be
powered from the +5V supply (J1-12) or the +12V supply (J2-4) while using
the I/O GND (J1-24) as a common.
ENCODER INPUT SPECIFICATIONS
protected
encoder
frequency
input
voltage
phase
pin
v
th
lo
v
th
hi
max
iimpedance
range
A J1-10
1 k
Ω
B J1-22
1.0 V
2.2 V
15 kHz
(internal pull-up
-1 V to B+
to +4.4 V)
1
13
12
24
1
13
12
24
Summary of Contents for 1356
Page 2: ......