6SN2155-2CM11-1BA1 - Siemens

Power Management Module Operating Instruction Edition 04.03 - Page 1 of 6

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

DC-PMM/48V

RUN

OVERVOLTAGE

FAULT

DISCHARGE

RESET/24V

L+ INPUT

L+ OUTPUT

125

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

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.

Relay break contact

Signals malfunction.

Contact is made when the supply voltage is not applied or in case of

malfunction.

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

Subject to delivery and technical modification