Micro-Speed Function; Limit To 1 St Speed Function - Hitachi P1 Basic Instruction Manual

MICRO-SPEED FUNCTION

Micro-speed is designed to temporarily restrict the speed of the hoist to a lower speed and to prevent high speed operations until the
function is released. The micro-speed function can be configured two ways.
2-STEP MAINTAINED MODE
be specific. This mode can also be used to provide a single speed by setting the low and high micro speed values the same value. To
use this mode UE-16 must have a value of 0.
PERCENTAGE MODE
– This mode will take the value from UE-16 as a percentage of the standard speed set. Setting UE-16 to a value of
50 will provide a 50% reduction in speed to the standard speed sets for the configured speed control method.
In the chart below the digital input 4 is configured from the factory for micro-speed.
Function
Digital Input 4 Mirco-Speed Activation Input
Mirco-Speed Low-Speed
Mirco-Speed High-Speed
Micro-Speed Mode
ST
LIMIT TO 1 SPEED FUNCTION
For applications where it is required to limit the VFD to 1
function. This is typically used for travel limits or when approaching an upper / lower hook limit. The parameter chart below
references setting digital input 6 but any available inputs other than input 7 can be used.
Function
Digital Input 6 Function
Digital Input 6 Contact Status
– This mode will switch to a 2-Step maintained speed set. This is helpful where the micro-speeds need to
Parameters
CA-04
UE-10
UE-15
UE-16
st speed frequency you can configure an available digital input for that
Parameter
CA-06
CA-26
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Value
89:MI4
500 (5.00 Hz)
1000 (10.00 Hz)
Value = 0 (2-STEP MAINTAINED MODE)
Value > 0 (PRECENTAGE MODE)
Value
96:MI11
00 = N.O
01 = N.C