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Fagor

odular Drives and Motors

uick

eference. Ref.2104

MQR-51/84

RESISTOR MODULE, ER-TH-X/X & ER+TH-18/X+FAN

External resistors are used to dissipate the excess of energy
generated at the power bus in a braking process of electrical motors
and cannot be dissipated by the internal resistor of the module
(power supply). These resistors do not require external electrical
supply.

CAPACITOR MODULE, CM-1.75

This module stores the energy returned while the motors are braking.
The capacitor module should also be used when having systems that
sporadically request high current peaks from the power bus hence
increasing the bus' own capacity.
From the energy point of view, installing a capacitor module is more
efficient than installing external braking resistors.

BUS PROTECTION MODULE, BPM

Install in DDS systems having:

Synchronous spindle and only when required by the application.

Purpose. Protect the power semi-conductors (IGBTs) of the drive that
governs it, thus preventing damage to the unit due to a very high
voltage that may be generated at the power bus because the braking
energy cannot be returned when a voltage drop occurs and/or,

RPS pow. supply when only the controlled stop is to be ensured.

Purpose. To ensure a controlled stop of the motor due to mains failure
because the energy may be dissipated while braking at the external
Ballast resistors installed in the BPM module. Not installing this
module will result in an uncontrolled stop (by inertia) in case of a
voltage failure due to an over-voltage error of the bus because there
are no resistors to dissipate the braking energy.

MAINS FILTER

Absolutely necessary for complying with the European Directive on
Electromagnetic Compatibility 2014/30/EU or the International
Standard IEC 1800-3. The filter

MAIN FILTER 42A-A

is designed

for PS-25B4, XPS-25 and RPS-20,

MAIN FILTER 130A-A

designed for PS-37-L, PS-65A, XPS-65 and RPS-75,

MAIN FILTER

75A

is designed for RPS-45 and

MAIN FILTER 180A

is designed

for RPS-80.

XPS CHOKES & RPS CHOKES

The CHOKES (inductance) must only be installed with regenerative
power supplies (XPS and RPS).
XPS power supplies have their own associated XPS choke. RPS
power suppli-es have their own associa-ted RPS choke.
When returning power to mains, the impedance of mains for the
outgoing currents is very low. Thus, the up ramps of this current must
be limited with a CHOKE

SELECTING THE EXTERNAL BALLAST RESISTOR

Non-regenerative power supplies PS-37-L, PS-25B4 and PS-65A
have three micro-switches for selecting the external Ballast resistor.
It is also possible to disable the

«I²t»

protection when selecting the

internal resistor or having the RM-15 module (discontinued)
because they both include a protection with their own thermostat
protection.

CAPACITOR MODULE

APS-24

BPM

CM-1.75

ER+TH-X/X EXT. THERMOSTAT

ER+TH-X/X INT. THERMOSTAT

ER+TH-18/X+FAN

MAIN FILTER XA

MAIN FILTER XA-A