Ndrive HP 10/20/30 User’s Manual
Technical Details
www.aerotech.com 3-11
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 2.6.1 Encoder Phasing 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
HB
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
HA
Hall Effect Sensor A (Brushless Motors only)
Input
11
HC
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 fuse.
Table 3-12.
Motor Feedback Connector Mating Connector (J207)
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 to the user is limited to 500 mAmps
and protected by a re-settable fuse. Should an over-current condition occur, the device
will open to protect against the overload. To reset the device, remove the overload
condition.
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