Catalogs > Industrial Controls Catalog > Power Supplies > Switched Mode

Switched Mode

Introduction

Certifications

How to Select a Bulletin 1606 Power Supply

Approximate Dimensions and Wire Size

1606-XL, 1606-XLBuffer, 1606-XLS DC UPS

1606-XL, 1606-XLBuffer, 1606-XLS DC UPS

1606-XL Redundancy Capabilities

The 1606-XL family has two cost effective methods for providing redundancy to applications that are critical and can not risk failure.

1606-XL60DR, XL120DR and XL240DR Redundant Power Supplies

The 1606-XL60DR, XL120DR and XL240DR are enhanced versions of the standard power supplies.

Each device has internal diodes which provide isolation against DC bus problems corrupting working supplies.
Provides "DC OK" output relay to allow remote monitoring of DC power status.
Utilizes pluggable terminals for easy installation.

1606-XLRED20-30 and 1606-XLRED40 Redundancy Modules

The 1606-XLRED20-30 and 1606-XLRED40 allow redundant wiring of 20…40 A power supplies.

Devices provide isolation of power supplies via diodes.
Provide remote monitoring of DC power status of each power supply.
A single XLRED20-30 can be used per pair of identical 20 or 30 A power supplies.
One XLRED40 is required for every 40 A power supply.

1606-XLPRED

When used in 1 + 1 redundant systems (such as XLRED20-30) limited to 8 A (short circuit) per power supply
When used in 1 + 1 redundant system (such as XLRED40) limited to 13 A (short circuit)
See product technical data sheets for more application information.

1606-XLSRED/1606-XLERED

When used in 1 + 1 redundant systems (such as XLRED20-30) limited to 10 A (short circuit) per power supply
When used in 1 + 1 redundant system (such as XLRED40) limited to 20 A (short circuit)
See product instruction manual for more application information.

1606-XLBuffer

Features

Buffering for 24V loads
Guaranteed hold-up time: 0.2 s/20 A…3.6 s/1 A
Fit for industrial use: Energy storage in electrolytic caps., no accumulators
Clear status indication by Status LED and signalling terminals
No batteries requiring replacement

Short Description

The buffer unit is a supplementary device for regulated 24V DC power supplies. It buffers load currents during typical mains faults and switching events or load peaks.

Working principle

In times when the power supply provides sufficient voltage, the buffer unit stores energy in integrated electrolytic capacitors. In case of a mains voltage fault, this energy is released again in a regulated process.

Bridges mains faults without interruption

Statistics show that 80% of all mains faults last less than 0.2 s. These mains faults are completely bridged by the buffer unit and will have no influence on the DC power. This increases the reliability of the system as a whole.

Extended hold-up time

Once the main power fails or is switched off, the buffer unit will continue to provide the load current for a defined period of time. Process data can be saved and processes can be terminated before the DC power switches off. Controlled restarts are subsequently possible.

Easy to handle, expandable, and maintenance-free

The buffer unit does not require any control wiring. It can be added in parallel to the load circuit at any given point. Any given number of buffer units can be installed in parallel to increase the output capacity or the hold-up time. The dual terminals allow for easy wiring.

Operating Modes

Activation Threshold

“22.5V fixed”	Buffering starts if terminal voltage <22.5V, voltage is kept at 22.5V.
“Vin -1V”	Buffering starts if terminal voltage decreases by more than 1V, faster than typ. 0.54V/s. Voltage is kept at that level. Buffering ends when voltage increases once more by 1V.
Noise (spikes)	>200mV_PP (20MHz bandw., 50 W–measurement, buffer operation only)
Over voltage protection	limited to max. ±35V

Hold-up Time

Operating Indicators and Elements

A - Signaling terminals:

7 Active: unit is buffering
8 Ready: unit is on stand-by

B - Jumper back-up threshold:

Position 1-2: variable:
Vin -1V. Buffering if voltage decreases faster than typical 0.54V/s and greater than 1V
Position 2-3: DC 22.5V fixed. Voltage buffering starts at Vin less than 22.5V

C - Status LED
Indicates charge status of buffer capacitor array

D - Power In/Out terminals:
dual terminals

+ (positive)
- (negative)

1606-XLS DC UPS

Features

Requires only one 12V battery
Electronically protected against output overloads
Flexible battery options, modular system
Extensive battery management including battery quality and installation tests
Regulated output voltage in buffer mode
Soft charger for optimum battery life
50% power reserves
Extensive diagnostic and monitoring functions

Short Description

The DC UPS is a supplementary device to a 24V power supply. It provides back-up power to bridge dips, sags, or brief losses of power using a 12V battery. Based on the battery you select, you can achieve hold-up times anywhere from a few minutes to several hours.

Working principle

In times when the power supply provides sufficient voltage, the DC UPS charges the 12V battery. When input power fails, the battery voltage will be boosted to a 24V level through a boost converter and the energy will be released in a regulated process to the load.

Integrated in the DC UPS is a sophisticated battery management system. This battery management system incorporates a battery charger, deep discharge protection, and overload protection which together increase the service life of the battery.

In addition, there are extensive protective features that self-protect the unit from damage along with diagnostic and monitoring functions that aid in troubleshooting.

Extended Hold-Up Time

The modular design of the DC UPS allows for flexible battery options. The design will accept valve regulated, lead-acid batteries between 3.9Ah – 27Ah. The modularity of the system enables you to match the battery with your application requirements.

Extensive Diagnostic & Monitoring Functions

Protective Features:

Wrong battery voltage (24V instead of 12V)
Deep discharge (battery) protection
Wrong battery polarity
Wrong polarity on input terminals
Too high ambient temperature
Over-voltage protection
(malfunctioning of the internal regulation loops)
Output overload or output short-circuit

A - Status LED (green):

Ready: Battery is charged > 85%, no wiring failure is recognized, input voltage is sufficient and inhibit signal is not active.
Charging: Battery is charging and battery capacity is below 85%.
Buffering: Unit is in buffer mode.

B - Diagnosis LED (yellow):

Overload: Output has switched off, due to long overload in buffer mode or due to high temperatures.
Replace battery: Indicates a battery which failed the battery quality test (SCH test). Battery should be replaced soon.
Buffer time expired: Output has switched off due to settings of buffer time. The signal will be stored and displayed for 15 minutes.
Inhibit active: Indicates that buffering is disabled due to an active inhibit signal.

C - Check wiring LED (red):

Check wiring between DC UPS and battery, as well as the battery itself. Also indicates when input voltage is not in range.

D - Adjustor:

Buffer time limiter: User accessible switch which limits the maximum buffer time in a buffer event, to save battery capacity.
End-of-charge voltage: User accessible potentiometer which sets the end-of-charge voltage. Adjust the potentiometer according to the expected battery temperature.

E - Signal contacts:

Ready (contact 1-2):

Contact is closed when battery is charged more than 85%, no wiring failure is recognized, input voltage is sufficient, and inhibit signal is not active.

Buffering (contact 3-4):

Contact is closed when unit is buffering.

Replace battery (contact 5-6):

Contact is closed when input voltage is sufficient and battery quality test (SCH test) indicates a negative result, three times in a row.

Inhibit input (contact 7&8):

The inhibit input disables buffering. In normal mode, a static signal is required. In buffer mode, a pulse with a minimum length of 250 ms is required to stop buffering. The inhibit is stored and can be reset by cycling the input voltage.