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User Manual and Reference Handbook CrossFire™ MX1B CANopen slave
Electrical Interface Characteristics
Analog Inputs
There are three types of Analog Inputs available on the CrossFire™ MX1B. Only ports
9 through 16 are configured by default. Ports 17 through 20 must be reconfigured in the
object dictionary (index 0x2000) in order to be used as Analog Inputs. The port
allocations and characteristics of all Analog Inputs are described in the tables below.
Analog Inputs
Port
9
10
11
12
13
14
15
16
17
18
19
20
Signal Type
Comment
Analog Input Type 1
Functional Group: Analog Inputs
Analog Input Type 2
Functional Group: Mixed I/O
Analog Input Type 3
Functional Group: ID Interface
Electrical Characteristics for Analog Inputs
Value
Signal Name
Parameter
Analog Input Type 1
Analog Input Type 2*
Input Voltage
Analog Input Type 3
Analog Inputs
Types 1, 2 & 3
Input Impedance
0 – 32 volt range
Typ
Max
Unit
-
5/32
V
0
-
5/32
or
Vbatt
V
0
-
5
V
0
Analog Input Type 3
Analog Input
Type 1 and 2
Min
Comment
Each port has a softwareselectable range
Each port has a softwareselectable range
Damage Occurs if Input
Voltage exceeds Vbatt
10 kΩ pull-up to +5 V
11.5
kΩ
pull down*
Input Impedance
0 – 5 volt range
1
MΩ
pull down
10
kΩ
pull up
Resolution
10
bits
Total Unadj.Error
±2
LSB
Input Capacitance
100
nF
Protection
0 – 5 volt range*
Diode-Clamp protected against over- and under voltage.
*Use of 0 – 32 Volt range adversely affects input impedance and error.
*The analog inputs that are combined with on/off outputs shall only be used as
feedback for the outputs. Because of the open-load detection feature there will be a low
current flowing to these outputs. This makes the inputs not useful as ordinary analog
inputs.
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