Power Management Module Operating Instruction Edition 04.03 - Page 1 of 6
s
DC-PMM/48V
Power Management Modul
für Positionier-Motor POSMO A
Power Management Module
for Positioning Motor POSMO A
Best. Nr. / Order No.: 9AL2137-1BA00-1AA0
Betriebsanleitung
Operating Instructions
04.03
UL File – Number E216683
Gültig für Geräteversion A und Softwarestand V2.01
Valid for Version A and Software Release V2.01
Power Management Module Operating Instruction Edition 04.03 - Page 2 of 6
Maßbild
Dimension drawing
Abmessungen / Dimensions: 125 mm x 120 mm x 55 mm
ENGLISH
CAUTION
Only qualified personnel may open the device.
Electrostatic Sensitive Devices (ESD)
Technical data
Power supply
Rated input voltage: 48V DC
Operating voltage range: 38.4V DC – 57.6V DC
Maximum permissible continuous curren t via PMM: 25A at 40°C ambient temperature
Maximum permissible current via PMM in intermittent duty S6: 28A at 40°C ambient temperature
120
55
s
DC-PMM/48V
RUN
OVERVOLTAGE
FAULT
DISCHARGE
RESET/24V
L+ INPUT
L+ OUTPUT
M
M
M
125
11
12
14
Power Management Module Operating Instruction Edition 04.03 - Page 3 of 6
The DC-PMM/48V is not designed to withstand sustained short-circuiting. A current-controlled mains adapter must therefore be
used to supply the power (e.g. SITOP POWER from Siemens).
If a compatible power supply is used, an external, quick-acting fuse must be used on the input side to make sure that the
permissible current through the device is not exceeded.
Environment
Temperature for storage and transport: -25 to 85°C
Temperature for operation: 0 to 40°C
Air-cooled
Protection and monitoring function
Overvoltage detection through motor braking; trigger threshold at approx. 58.1V.
I2t monitoring and fuse to protect the pulsed resistor against thermal overload.
In addition, a varistor (SIOV-S14K50 from EPCOS) is connected in parallel to the output terminals L+ Output and M.
Relay data
Type of relay: Monostable Relay with changeover contact
Contact Rating: 0.46A, 150V AC, Resistive
0.46A, 65V DC, Resistive
1A, 30V DC, Resistive
Pulsed resistor data
Maximum pulse load capacity: 40Ws
Continuous load: 15W
Terminal block data
Rated current/range: 30A / 4mm2
Maximum load current/range: 32A / 6mm2
Connected load capacity:
- rigid / flexible / conductor sizes: 0.5 - 6mm2 / 0.5 - 4mm2 / 20 - 10AWG
- flexible using connector sleeve without/with
plastic sleeve: 0.5 - 4mm2 / 0.5 - 4mm2
Screw thread: M3
Pickup momentum: 0.5 0.6Nm
Insulation length: 14mm
Applicable standards
Type of protection: IP20 as per IEC 529
EMC tests: Burst as per IEC 1000-4-4
Field coupling as per IEC 1000-4-3
Weight 0.5kg
Installation
The DC-PMM/48V is a rack-mounting unit; it may not be installed in the open air.
The device must be installed vertically for proper heat dissipation. Make sure that the air vents are at the top and bottom to
ensure an adequate air flow.
A clearance of 100mm should be observed at the top and bottom of the device.
Also note that the pulsed resistor may cause the right-hand side of the PMM to heat up considerably (e.g. frequent braking by
one or more POSMO A).
Description of functions
The DC-PMM/48V is installed between one or more positioning motors (POSMO A) and the load power supply, and is used as
feedback protection for the latter. The device is integrated between the load power supply and the first positioning motor.
The PMM de tects when the p ositioning motor brake s and uses an internal pulsed resistor to convert the feedback e nergy from
the motor to heat.
Power Management Module Operating Instruction Edition 04.03 - Page 4 of 6
An integrated I2t monitor protects the pulsed resistor against thermal overloading, thus preventing damage to the resistor.
Should the DC-PMM/48V detect motor braking, not permitting any further reduction of braking energy via pulsed resistor due to
I2t monitoring, the device has faulted itself, not reacting to any further braking until a reset (cold restart of the unit) has been
carried out. This reset is actuated by a 24V pulse at the R ESET terminal or by removing and reapplying the supply voltage to
the PMM itself.
The relay contacts of the PMM are used as signaling and monitoring contacts for the operating states “Ready“ and “Fault“. For
“Ready“, output 14 of the relay is switched to input 11; otherwise, output 12 is switched to input 11 (changeover contact).
Principle drawing showing integration of DC-PMM/48V in the device group:
The DC-PMM/48V is connected directly after the load power supply and before the first POSMO A, with terminals L+ Input and
M (existing three times altogether) of the PMM to be wired to the load power supply, terminals L+ Output and M to be wired to
the first motor.
When connecting several positioni ng mot ors of type POSMO A, the supply volta ge is picked up from the relevant terminals of
the first motor and transferred to the next motor. The power supply for subsequent motors is thus always picked up from the last
POSMO A and connected to the following positioning motor.
The maximum permissible number of POSMO A that can be connected to one DC-PMM/48V depends on the maximum
permissible overall current over the PMM, the simultaneity factor of feedbacks by a braking operation and the feedback
energy of a motor.
Observe and calculate the feedback energy obtained by braking operations.
The maximum continuous load capacity of the pulsed resistor is 15W, the pulse load capacity is 40Ws.
Make sure that the pulse load capacity is not exceeded in order to protect the PMM from damage.
The integrated I2t monitor makes sure that the maximum permissible continuous rating of 15W is not exceeded.
Example 1:
If five motors with a rated current of 5A each and a feedback energy of 3Ws per braking operation brake constantly or over a
longer period of time within a second, one DC-PMM/48V is adequate.
- Overall current in that case via PMM: 5 x 5A = 25A
- Pulse load at pulsed resistor: 5 x 3Ws = 15Ws
- Continuous rating via pulsed resistor: 15Ws / 1s = 15W
Load power supply
(e.g. twice SITOP power of 24V DC) DC-PMM/48V
................
POSMO A/300W POSMO A/300W POSMO A/300W POSMO A/300W
Power Management Module Operating Instruction Edition 04.03 - Page 5 of 6
Example 2:
If five motors with a rated current of 5A each and a feedback energy of 3.5Ws per braking operation brake once simultaneously,
one DC-PMM/48V is adequate for that single braking operation as well.
In this case constant braking of the motors or braking over a longer period of time within a second is not possible as the
maximum permissible continuous load of 15W is exceeded and the I2t monitor is responding. The device turns to the “fault“ state
and must be reset.
- Overall current in that case via PMM: 5 x 5A = 25A
- Pulse load at pulsed resistor: 5 x 3.5Ws = 17.5Ws
- Continuous rating via pulsed resistor: 17.5W s / 1s = 17.5W
In this case of application only a maximum of four motors may brake constantly or over a longer period of time within a second
without response from the I2t monitor, turning the device to the “fault“ state (4 x 3.5Ws / 1s = 14W < 15W).
Connector and terminal assignment
Terminal Function Remarks
14
Relay make contact
Signals that the unit is ready for operation. Contact is made when the
supply vol t age is ap pl i ed prop e r ly.
12
Relay break contact
Signals malfunction.
Contact is made when the supply voltage is not applied or in case of
malfunction.
11
Relay input
Floating input for relay make/break contact.
DISCHARGE
Discharge contact
If this contact is grounded (M), the internal backup capacitors
of the PMM and POSMO A are discharged via the internal
pulsed resistor.
This contact must not be grounded when the supply voltage is
connected (since this would destroy the device)!
RESET/24V
Reset input of PMM
Reset input for +24V DC. If a 24V pulse lasting at least 500msec. is
present at this input, the PMM is reset to its basic setting. This is also
required as an acknowledgement after a fault has occurred in order to
return the PMM to the “Ready“ state.
If the supply voltage of a SITOP power supply (24V DC) is applied
briefly to this input, for example, via a pushbutton, the device is reset.
While a voltage is present at this terminal, the PMM is not
“Ready“. The device is not operable until the reset voltage is
removed!
Wait for approx. 60 sec. b efore r esetting the device after a fault to
avoid damaging the resistor due to thermal overloading.
L + INPUT
Input from main power supply
(+48 V DC)
Input for +48V DC from main power supply connected.
L + OUTPUT
Output for motor supply
(+48V DC)
+48V DC output to supply the positioning motors POSMO A.
M (3x)
Ground
Ground connections for the power supplies and also for external reset
voltage at input RESET/24V.
Power Management Module Operating Instruction Edition 04.03 - Page 6 of 6
Meaning of the LEDs
LED Meaning Remarks
RUN
Ready
Green LED.
Signals that the device is ready for operation and that the supply voltage has been
applied correctly.
OVERVOLTAGE
Overvoltage
Yellow LED.
Flashing of LED signals temporary overvoltage.
If the OVERVOLTAGE LED lights up together with FAULT, this means that the
overvoltage could not be eliminated and that the PMM has faulted (see description
of FAULT).
FAULT
Fault
Red LED.
FAULT flashing:
The applied supply voltage is below the required minimum voltage of 38.4V.
Correct supply voltage is checked only if voltage has been applied or after
resetting, i.e., no monitoring of undervoltag e once the device has turne d to the
“Ready“ state.
Permanent lighting of FAULT:
The security monitor of the PMM has responded. If lighting of this LED may not be
removed after resetting the device the fuse is damaged due to a device error. In
this case, send the device to the manufacturer to repair. Just changing the fuse
may not restore the “Ready“ state of the PMM.
Permanent lighting of FAULT and
OVERVOLTAGE:
If the LEDs FAULT and OVERVOLTAGE light up permanently, the PMM has
faulted due to overvoltage lasting too long (response of I2t monitor) and is waiting
for a reset to return to the “Ready“ state.
This function is necessary to protect the integrated resistor from thermal
overloading.
Wait for approx. 60 sec. before resetting the device after a fault to avoid
damaging the resistor due to thermal overload.
Order from
SIEMENS AG
I&S IS SC S RC Rbg
Im Gewerbepark A85
D-93059 Regensburg
Germany
Contact person:
Telefon: +49 (0) 941/4007-442
Fax: +49 (0) 941/4007-501
Order no.: 9AL2137-1BA00-1AA0
© Siemens AG Germany
All rights reserved
Subject to delivery and technical modification