7.5.2 With start-up delay and enable signal coupled to the motor
SP + Hy
SP
I
II
III
IV
SP – Hy
4
1
2
3
[Hz]
[s]
A
B
1: Voltage supply speed monitor
2: +24 V DC signal at the enable input (coupled to the motor)
3: Start-up delay
4: Switching functions
A:
B:
Input frequency as an indication of speed
Time
= relay energised, i
�
e
�
switched (transistor output switched)
Summary of Contents for AR003
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