Parameter Details
5
5.7 H: Terminal Functions
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference 289
■ 3A: Drive Overheat Alarm
Setting Value Function Description
3A Drive Overheat Alarm The terminal activates when the drive heatsink temperature is at the L8-02 [Overheat Alarm Level] setting while L8-03 = 4
[Overheat Pre-Alarm Selection = Operate at Reduced Speed (L8-19)] and the drive is running.
The drive will decrease the frequency reference as specified by L8-19 [Freq Reduction @ oH Pre-Alarm]. Carrier
frequency reduction is active when L8-97 = 1 [Carrier Freq Reduce during OH = Enabled].
■ 3D: During Speed Search
Setting Value Function Description
3D During Speed Search The terminal activates when the drive is doing speed search.
Note:
Refer to “b3: Speed Search” for more information.
■ 42: Pressure Reached
Setting Value Function Description
42 Pressure Reached The terminal activates when the drive is at the Pressure Setpoint.
The drive uses the Pressure Feedback and Y4-36 [Pressure Reached Exit Conditions] to Y4-40 [Pressure Reached
Detection Sel] for the activation and deactivation conditions.
When the b5-09 [PID Output Level Selection] setting changes, the MFDO terminal operation also changes.
• When b5-09 = 0 [Normal Output (Direct Acting)]
The function activates when the feedback is at or above the setpoint for the time set in Y4-38 [Pressure Reached On
Delay Time].
• When b5-09 = 1 [Reverse Output (Reverse Acting)]
The function activates when the feedback is at or below the setpoint for the time set in Y4-38.
When this function activates, it will use Y4-36, Y4-37 [Pressure Reached Hysteresis Lvl], and Y4-39 [Pressure
Reached Off Delay Time] to deactivate.
■ 4C: During Fast Stop
Setting Value Function Description
4C During Fast Stop The terminal activates when the fast stop is in operation.
■ 4D: oH Pre-Alarm Reduction Limit
Setting Value Function Description
4D oH Pre-Alarm Reduction
Limit
The terminal activates when L8-03 = 4 [Overheat Pre-Alarm Selection = Operate at Reduced Speed (L8-19)] and oH [Heatsink
Overheat] does not clear after the drive decreases the frequency for 10 cycles.
Note:
Refer to “L8-03: Overheat Pre-Alarm Selection” for more information.
■ 51: Sequence Timer 1
Setting Value Function Description
51 Sequence Timer 1 The terminal activates when Sequence Timer 1 is active.
■ 52: Sequence Timer 2
Setting Value Function Description
52 Sequence Timer 2 The terminal activates when Sequence Timer 2 is active.
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