AYK550-UH User’s Manual
80
Start-Up
Group 20: Limits
This group defines minimum and maximum limits to follow in driving the motor –
speed, frequency, current, torque, etc.
Group 20: Limits
Code Description Range
Resolution
Default
S
2001
MINIMUM SPEED
-30000…30000 rpm
1 rpm
0 rpm
9
Defines the minimum speed (rpm) allowed.
• A positive (or zero) minimum speed value defines two ranges,
one positive and one negative.
• A negative minimum speed value defines one speed range.
• See figure.
2002
MAXIMUM SPEED
0…30000 rpm
1 rpm
1800 (US)
9
Defines the maximum speed (rpm) allowed.
2003
MAX CURRENT
0.0… 1.3 * I
2N
0.1 A
1.3 * I
2N
9
Defines the maximum output current (A) supplied by the drive to the motor.
2006
UNDERVOLT CTRL
0, 1
1
1
Sets the DC undervoltage controller on or off. When on:
• If the DC bus voltage drops due to loss of input power, the undervoltage controller decreases the motor speed in
order to keep the DC bus voltage above the lower limit.
• When the motor speed decreases, the inertia of the load causes regeneration back into the drive, keeping the DC
bus charged, and preventing an undervoltage trip.
• The DC undervoltage controller increases power loss ride-through on systems with a high inertia, such as a
centrifuge or a fan.
0 =
DISABLE
– Disables controller.
1 =
ENABLE
(
TIME
) – Enables controller without a maximum time limit for operation.
P 2001
P 2002
Speed
-(P 2001)
-(P 2002)
P 2002
P 2001
Speed range allowed
Speed range allowed
Speed range allowed
Time
Speed
Time
2001 value is > 0
0
0
2001 value is< 0
Note!
2001 and 2002 are only used in vector mode. HVAC uses
scalar mode and limits are set in 2007 and 2008 min/max frequency.
Summary of Contents for AYK 550
Page 256: ...D1 AYK550 UH User s Manual Appendix D Appendix D Base Drive Drawing 205662 Drawings Fig 1...
Page 257: ...AYK550 UH User s Manual D2 Appendix D Base Drive w Fused Disconnect Drawing 205648 Fig 2...
Page 258: ...D3 AYK550 UH User s Manual Appendix D Base Drive w Non Fused Disconnect Drawing 205647 Fig 3...