Logic Supply Voltage - maxon motor EPOS2 Module 36/2 Hardware Reference Manual

Motherboard Design Guide
Requirements for external Components
5.1.2.1
An external capacitor is not mandatory for the function of the module, but – during braking of the load –
the power supply must be capable to buffer the fed back energy. Hence, connect an electrolytic capaci-
tor to the power supply voltage. The capacity needed depends on the following items:
For recommended types (supplying one EPOS2 Module 36/2) "Supplier Reference" on page 5-39.
5.1.2.2
Place a fuse at the power supply's entry to protect against reverse polarity. Together with the TVS
diode, the fuse breaks an occurring reverse current. The continuous current of the fuse depends on the
number of modules supplied and how much current each module needs. For recommended types
"Supplier Reference" on page 5-39.
5.1.2.3
For protection against short circuit of the motor winding connections, it is recommended to place addi-
tionally one fuse per module. The fuse must withstand 2 A continuously and 4 A during 5 seconds with a
typical melt I
5.1.2.4
To protect against overvoltage due to supply transients or the braking energy, connect a transient volt-
age suppressor diode to the power supply voltage. For recommended types "Supplier Reference" on
page 5-39.
5.1.3
The EPOS2 Module 36/2 features a logic supply voltage input and a +V
age input has a voltage range of 9...40 V and can be sourced separately or by the power supply voltage
(chapter "4.2 Minimum external Wiring" on page 4-19).
5-38
Capacitor C1
• Power supply voltage
• Speed at the beginning of the braking
• Total mass inertia
• Deceleration rate
• Number of modules
Fuse FU1
Fuse FU2
t smaller than 0.05 A
2
TVS Diode D1

Logic Supply Voltage

• If the logic supply voltage is sourced, the +V
sensors and encoder.
• If the logic supply voltage is sourced separately, a transient voltage suppressor diode at the
logic supply voltage input can be connected to protect the module against overvoltage. For ref-
erences on the TVS diode "Supplier Reference" on page 5-39.
© 2017 maxon motor. Subject to change without prior notice.
s. For recommended types "Supplier Reference" on page 5-39.
2
can be used as +5 VDC supply output for Hall
aux
Document ID: rel7050
Edition: May 2017
output. The logic supply volt-
aux
maxon motor control
EPOS2 Positioning Controller
EPOS2 Module 36/2 Hardware Reference