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Technical Details
Ndrive HL User’s Manual
3-12 www.aerotech.com
3.3. Motor Feedback (J207)
The 25-pin “D” style connector contains all of the required feedback inputs for a servo
loop. This connector has inputs for a 3-channel encoder, three limit switches, and three
Hall effect devices. Each of these inputs provides feedback for the DSP microprocessor
controlled position, velocity and current loops.
See Section 2.5.1. for information on interfacing non-Aerotech motors.
Table 3-11.
Motor Feedback Connector Pin Assignment (J207)
Pin #
Label
Description
In/Out/Bi.
1 Frame
Chassis
Frame
N/A
2
Thermistor
Motor over temperature Thermistor
Input
3
+5 Volt
+5 Volt Power for Encoder (500mA. max.)*
Output
4 Common Signal
Common
N/A
5
Hall B
Hall Effect Sensor B (Brushless Motors only)
Input
6
Mkr-
Encoder Marker Reference Pulse -
Input
7
Mkr+
Encoder Marker Reference Pulse +
Input
8 N.C.
No
Connection
N/A
9 N.C.
No
Connection
N/A
10
Hall A
Hall Effect Sensor A (Brushless Motors only)
Input
11
Hall C
Hall Effect Sensor C (Brushless Motors only)
Input
12
CW/+Lmt.
Clockwise End of travel limit
Input
13
Brake -
Optional Brake - Output
Output
14
Cos+
Encoder
Input
15
Cos-
Encoder Cosine -
Input
16
+5 Volt
+5V Power for Limit Switches (500mA. max.)*
Output
17
Sin+
Encoder Sine +
Input
18
Sin-
Encoder Sine -
Input
19 N.C.
No
Connection
N/A
20
Common
Signal Common for Limit Switches
N/A
21
Common
Signal Common for Encoder
N/A
22
Hm.Lmt.
Home Switch Input
Input
23 N.C.
No
Connection
N/A
24 CCW/-Lmt. Counterclockwise
End of travel limit
Input
25
Brake +
Optional Brake + Output
Output
* Total user +5 V power is limited to 500 mA, by an internal re-settable semiconductor fuse.
Table 3-12.
Motor Feedback Mating Connector (J207)
25-Pin Male D-style
Aerotech
Third Party Source
Connector
ECK00101
Cinch P/N DB25P
Back shell
ECK00656
Amphenol P/N 17-1726-2
All of the external power provided by the Ndrive HL to the user is limited to 500 mAmps
and protected by a re-settable semiconductor fuse. Should an over-current condition
occur, the device will open to protect against the overload. To reset the over-current
device, remove the overload condition.
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