17.5.3
Convection cooled systems, NY4120
When five NY4120 drive modules are used in the NY4053 system housing,
you can build the maximum configuration with 10 axes.
motor current for 10 axes (5 NY4120 drive modules) and all digital outputs at
1A load vs. environmental temperature" on page 219
when all 10 motors ask continuously the same maximum motor current and
all 20 digital outputs are driving a load of 1 A continuously. Under these
conditions the maximum motor current is 2 A rms at an environmental
temperature of approximately 30 °C.
Note that the absolute maximum environmental temperature is 40 °C.
70
20
30
40
10
0
50
60
Environmental temperature (°C)
Motor
current
(A. rms)
2
4
6
8
0
Fig. 17-2:
Maximum motor current for 10 axes (5 NY4120 drive modules) and
all digital outputs at 1A load vs. environmental temperature
As shown in
fig. 17-3 "Maximum motor current for 10 axes (5 NY4120 drive
modules) and digital outputs not used vs. environmental temperature" on
, when the digital outputs are not used, the absolute maximum
environmental temperature increases to 45 °C.
70
20
30
40
10
0
50
60
Environmental temperature (°C)
Motor
current
(A. rms)
2
4
6
8
0
Fig. 17-3:
Maximum motor current for 10 axes (5 NY4120 drive modules) and
digital outputs not used vs. environmental temperature
For NYCe 4000 systems in which not all available slot positions are used, the
thermal derating conditions improve because of better convection airflow in
the system.
fig. 17-4 "Maximum motor current for 2 axes (one NY4120 drive
module) and all digital outputs at 1 A load vs. environmental temperature" on
NYCe 4000 Multi-axis motion control system Hardware Sys‐
tem Manual
219/233
Environmental Conditions
R911337671_Edition 18 Bosch Rexroth AG
