Aerotech Encoder Conditioning Unit Manual page 9

ECU Hardware Manual
1.3. I/O Signals
The ECU interface is designed to be used with industry standard 1 Vpp readheads. Cos, Sin, and reference
mark differential input signals should have nominal signal amplitude of 1 Vpp developed across 120 Ω input
termination resistor.
One or two open collector limit switch signals, active high or active low can also be input.
Table 1-4: 15 Pin 'D' Type Socket
Pin Signal Description
1 COS-N Cosine-N
2 SIN-N Sine-N
3 MRK Reference mark
4 5 V 5 V power supply
5 5 V 5 V power supply
6 – Not connected
7 SETUP Setup signal/second (P) limit switch on dual limit readheads
8 V First (Q) limit switch
q
9 COS Cosine
10 SIN Sine
11 MRK-N Reference mark
12 COM 0 V power supply
13 COM 0 V power supply
14 – Do not connect
15 Inner Cable's inner shield connection to 0 V
Table 1-5: 15 Pin 'D' Type Plug
Pin Signal Description
1 COS-N Cosine-N
2 SIN-N Sine-N
3 MRK Reference mark
4 5 V 5 V power supply
5 5 V 5 V power supply
6 BID Bi/uni-directional reference mark select
7 SETUP Setup signal/P limit switch on dual limit readheads
V
8 Q limit switch
q
9 COS Cosine
10 SIN Sine
11 MRK-N Reference mark
12 COM 0 V power supply
13 COM 0 V power supply
14 DIR Direction selector for reference mark
15 - Not connected
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Encoder Conditioning Unit
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