Rockwell Automation Publication 2099-UM001D-EN-P - December 2012
67
Kinetix 7000 Connector Data
Chapter 3
Figure 42 - AM, BM, and IM Motor Encoder Inputs
Table 25 - Motor Encoder Feedback Specifications
provides a description of the AM, BM, and IM inputs for TTL
encoders.
Table 26 - TTL Encoder Specifications
+5 V
+
-
56 pF
56 pF
10k
Ω
1k
Ω
1k
Ω
100 pF
+
-
100 pF
56 pF
56 pF
1k
Ω
1k
Ω
1k
Ω
1k
Ω
1k
Ω
56 pF
56 pF
10k
Ω
10k
Ω
10k
Ω
1k
Ω
1k
Ω
AM and BM Channel Inputs
IM Channel Input
Drive
Drive
Attribute
Value
Encoder Types
Incremental, A quad B, Sine/Cosine, Intelligent, and Absolute
Maximum Input Frequency
5.0 MHz (TTL input) per channel
250 kHz (Sine/Cosine input)
Commutation Feedback
Hall sensor
Parameter
Description
Minimum
Maximum
AM, BM, and IM
ON-state
Input Voltage
Input voltage difference between the + input and
the - input that is detected as an ON-state.
+1.0V
+7.0V
AM, BM, and IM
OFF-state
Input Voltage
Input voltage difference between the + input and
the - input that is detected as an OFF-state.
-1.0V
-7.0V
Common Mode
Input Voltage
Potential difference between any encoder signal and
logic ground.
-7.0V
+12.0V
DC Current Draw
Current draw into the + or - input.
-30 mA
30 mA
AM, BM Input
Signal Frequency
Frequency of the AM or BM signal inputs. The count
frequency is 4 times this frequency, since the circuitry
counts all four transitions.
—
5.0 MHz
