Warning And Self-Diagnosis Functions - ACP Speecon 7200M3 Manual

2.9 Warning and Self-Diagnosis Functions

Protection function
Low-voltage protection
main circuit voltage
insufficient
Over voltage protection
Cooling fin overheat warning
Overtorque detection
During
acceleration
Stall
prevention
Accel/decel is
During
accomplished
normal
with maximum
operation
capacity of the
inverter without
trip- ping on
over- current or
During
overvoltage a
deceleration
Simultaneous normal and reverse
rotation commands
External baseblock signal input
(Minor failure)
main circuit transistor
instantaneous shut-off
Digital operator communication
error
Monitor display appears if low voltage protection conditions such as a drop in main
circuit voltage or momentary power loss occur while the inverter output is off.
Monitor display appears when the main circuit DC voltage rises above the detection
level while the inverter output is off.
Monitor display appears when a separate thermal protector contact is input to the
external terminal.
This function is used to protect the machine and to monitor the inverter output torque.
The inverter output reacts in a preset manner when the inverter output current exceeds
the over torque detection level. The monitor display blinks when "operation continue"
is preset.
Inverter acceleration is stopped when 170% of or more of the inverter rated current is
required by the load. This prevents overload protection (OL2) or overcurrent (OC)
from occurring. When current is reduced to less than 170%, acceleration is enabled.
Output frequency is decreased when 160% of the inverter rated current or greater is
required by the load. This prevents motor and inverter overload (OL1, OL2). When
current is reduced below 160%, inverter acceleration is than enabled.
Deceleration is stopped when the DC voltage is caused to rise by motor regenerative
energy. This prevents overvoltage trips (OV). When DC voltage decreases,
deceleration to the set value then resumes.
When forward and reverse rotation commands are simultaneously detected for a
period of time exceeding 500ms, the inverter is stopped according to the preset stop
method.
When an external base block signal is input, the motor coasts to a stop. When the
external base block signal is removed, the inverter output is immediately turned on at
the previously set frequency.
Digital operator communication error 1
Digital operator communication error 2
Explanation
- - 109
Fault contact
Monitor display
output
(UV) Non operation
(Blink)
(OV) Non operation
(Blink)
(OH) Non operation
(Blink)
(OL3) Non operation
(Blink)
－
Non operation
(EF)
Non operation
(Blink)
(BB) Non operation
(Blink)
Non operation