Siemens COMBIMASTER 411 Getting Started Manual page 11

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Ramp Time Jumpers
In the following table the behaviour of the Jumpers for ramp times are explained:
Status before action(s)
• No jumper fitted
• Ramp times have
arbitrary setting
• At least 1 jumper is
fitted
• Ramp times have
arbitrary setting
• At least 1 jumper is
fitted
• Ramp times have
arbitrary setting
3.2.2
Control Jumpers are provided for the following functions (fit the jumpers to
enable the function). Jumpers can only be accessed when the cover is removed:
1. Pot = Run: Enables the control potentiometer as the Command Source
(auto restart is enabled).
2. 24 V Analog input: to change analog input range from 0-10V to 0-24V.
3. DC Brake: to change Stop function from OFF1 to DC Brake.
4. Fan/Pump: M~n
5. 60Hz operation: to change motor default settings from 50Hz to 60 Hz.
Warning
!
With the DC Brake Jumper set, when stopping the inverter, DC
Braking is applied for a period proportional to the Ramp Down
Time.
Frequent use of long periods of DC injection braking can cause
the motor and inverter to overheat.
Getting Started Guide – March 2002
A5E00157510A
Тел.: 8 (0214) 444395, 443688, 442155, (029) 6171554
Action(s)
• Power down
• Fit jumper(s)
• Power up
• Cycle power
• Power down
• Remove jumper(s)
• Power up
Control Circuit Jumpers
2
: to change V/f curve from Linear to Quadratic curve.
Reaction(s) of the
inverter
• Inverter uses the ramp
times defined by the
current jumper setting
• Inverter uses the ramp
times defined by the
current jumper setting
• Inverter uses the ramp
times that were used
before removing the
jumper(s)
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