EM11 User’s Manual
2. Product Information
9
Item
Specifications
Overvoltage/ Over current
stall control
The current and voltage are limited automatically during the
running process so as to avoid frequently tripping due to
overvoltage / over current.
Rapid current limit
function
It can auto limit running current of frequency inverter to
avoid frequently tripping.
Torque limit and control
(Excavator characteristics) It can limit the torque
automatically and prevent frequently over current tripping
during the running process.
Torque control can be implemented in the VC mode.
Individualized
functions
High performance
Control of asynchronous motor and synchronous motor are
implemented through the high-performance current vector
control technology.
Instant power off not stop
The load feedback energy compensates the voltage reduction
so that the frequency inverter can continue to run for a short
time.
Rapid current limit
To avoid frequently over current faults of the frequency
inverter.
Virtual I/O
Five groups of virtual DI/DO can realize simple logic control.
Timing control
Time range: 0.0~6500.0 minutes
Multi-motor switchover
Two motors can be switched by two groups of motor
parameters.
Multiple communication
protocols
It supports communication bus via Modbus-RTU,
PROFIBUS-DP, CANlink and CANopen.
Motor overheat protection
The optional I/O extension card enables AI3 to receive the
motor temperature sensor input (PT100, PT1000) so as to
realize motor overheat protection.
Multiple encoder types
It supports various encoders such as differential encoder,
open-collector encoder, resolver, UVW encoder, and SIN/
COS encoder.
Advanced background
software
It supports the operation of frequency inverter parameters and
virtual oscillograph function, by which the state of frequency
inverter can be monitored.
RUN Running
command
giving
key panel
Control terminals
Serial communication port
You can switch between these giving in various ways.
RUN
Frequency giving
There are 10 kinds frequency giving: digital setting, analog
voltage setting, analog current setting, pulse setting and serial
communication port setting.
You can switch between these giving in various ways.
Auxiliary frequency giving
There are 10 kinds auxiliary frequency giving. It can
implement tiny tuning of auxiliary frequency and frequency
synthesis.
2. Product Information
EM11 User’s Manual
10
Item
Specifications
RUN
Input terminal
Standard:
6 digital input (DI) terminals, one of which supports up to 50
kHz high-speed pulse input
2 analog input (AI) terminals, one of which only supports
0V~10 V voltage input and the another supports 0V~10 V
voltage input or 0~20 mA current input expanding capacity:
many DI terminals
1 AI terminal that supports -10V~10 V voltage input.
Output terminal
Standard
1 high-speed pulse output terminal (open-collector) that
supports 0–50 kHz square wave signal output.
1 digital output (DO) terminal.
1 relay output terminal.
2 analog output (AO) terminals, one of them supports 0~20
mA current output or 0V~10 V voltage output expanding
capacity:
many DO terminals.
many relay output terminals.
Display and
keypad
operation
LED display
It displays the parameters.
LCD display
It is optional, supports panel display in Chinese or English
language.
Parameters copy
Optional LCD keypad can copy parameters.
Key locking and function
selection
It can lock the keys partially or completely and define the
function range of some keys so as to prevent misoperation.
Protection mode
Motor short-circuit detection at power-on, input/output phase
loss protection, over current protection, overvoltage
protection, less voltage protection, overheat protection and
overload protection,etc.
Environment
Installation location
Indoor, no direct sunlight, dust, corrosive gas, combustible
gas, oil smoke, vapour, drip or salt.
Altitude
Lower than 1000 m
Ambient temperature
-10°C~ +40°C (de-rated if the ambient temperature is
between 40°C and 50°C)
Humidity
Less than 95%RH, without condensing
Vibration
Less than 5.9 m/s2 (0.6 g)
Storage temperature
-20°C ~ +60°C
