EQ7 Series Instruction Manual - TECO-Westinghouse Motor Company
EQ7 Series Instruction Manual - TECO-Westinghouse Motor Company
EQ7 Series Instruction Manual - TECO-Westinghouse Motor Company
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[ 4 ] Using pulse train input (F01 = 12)<br />
The <strong>EQ7</strong> can accommodate different types of pulse train inputs. Select the type of signal (d59) and scaling<br />
(d62, d63) as described here.<br />
• Selecting the pulse train input format (d59)<br />
A pulse train in the format selected by the function code d59 can give a frequency command to the inverter. Three<br />
types of formats are available; the pulse train sign/pulse train input, the forward rotation pulse/reverse rotation<br />
pulse, and the A and B phases with 90 degree phase difference. If no optional PG interface card is mounted, the<br />
inverter ignores the setting of the function code d59 and accepts only the pulse train sign/pulse train input.<br />
The table below lists pulse train formats and their operations.<br />
Pulse train input format<br />
selected by d59<br />
0: Pulse train sign/<br />
Pulse train input<br />
1: Forward rotation<br />
pulse/Reverse rotation<br />
pulse<br />
2: A and B phases with<br />
90 degree phase<br />
difference<br />
Operation overview<br />
Frequency/speed command according to the pulse train rate is given to the<br />
inverter. The pulse train sign specifies the polarity of the frequency/speed<br />
command.<br />
For the inverter without an optional PG interface card<br />
Pulse train input: PIN assigned to the digital terminal [X7] (data = 48)<br />
Pulse train sign: SIGN assigned to a digital terminal other than [X7] (data<br />
= 49)<br />
If no SIGN is assigned, polarity of any pulse train input is positive.<br />
Frequency/speed command according to the pulse train rate is given to the<br />
inverter. The forward rotation pulse gives a frequency/speed command with<br />
positive polarity, and a reverse rotation pulse, with negative polarity.<br />
Pulse trains generated by A and B phases with 90 degree phase difference<br />
give a frequency/speed command based on their pulse rate and the phase<br />
difference to an inverter.<br />
For details of operations using the optional PG interface card, refer to the <strong>Instruction</strong> <strong>Manual</strong> for it.<br />
Pulse train sign/Pulse train input<br />
Forward rotation pulse/Reverse rotation pulse<br />
A and B phases with 90 degree phase difference<br />
4-32
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