shows an NY4053 system housing with 2 axes (one NY4120 drive
module), where both motors ask continuously the same motor current, and
the remaining 4 slot positions are not used.
The graph shows that under these conditions the maximum motor current is 5
A rms at an environmental temperature of approximately 30 °C.Note that the
absolute maximum environmental temperature is 45 °C.
70
20
30
40
10
0
50
60
Environmental temperature (°C)
Motor
current
(A. rms)
2
4
6
8
0
Fig. 17-4:
Maximum motor current for 2 axes (one NY4120 drive module) and
all digital outputs at 1 A load vs. environmental temperature
17.5.4
Forced cooled systems, NY4125
The NYCe 4000 system can be installed with a standard fan unit with 3 fans
each producing an airflow of 11.3 m
3
/hr. The fan unit is strongly advised if
motors are used with motor currents higher than 2 A rms and/or the
environmental temperature is higher than 25 °C in a full system configuration.
When an NY4125 drive module is used in the NY4063 system housing, you
can connect 5 axes.
fig. 17-5 "Max. motor current for 5 axes and all digital
outputs at 1 A load with 3 fans (airflow 11.3 m
/hr) installed vs. environmental
shows the situation when all 5 motors ask
continuously the same motor current and all digital outputs are driving a load
of 1 A continuously.
If the PWM frequency is 96 kHz, the following conditions apply. See line Ⓐ.
●
The maximum motor current is 2.8 A rms for all axes at an
environmental temperature up to 25 °C.
●
The maximum motor current is 2.0 A rms for all axes at an
environmental temperature up to 45 °C.
If the PWM frequency is 32 kHz, the following conditions apply. See line Ⓑ.
●
The maximum motor current is 2.8 A rms for all axes at an
environmental temperature up to 55 °C.
220/233
Environmental Conditions
NYCe 4000 Multi-axis motion control system Hardware Sys‐
tem Manual
Bosch Rexroth AG R911337671_Edition 18
