Delta MCS-1800 User Manual

DELTA MCS-1800 Power Shelf

Installation, Operation and

Maintenance Manual

www.deltaww.com

Delta MCS 1800 3U

Power Shelf

Installation, Operations and

Maintenance Manual

DELTA ELECTRONICS, INC.

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

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1. General ---------------------------------------------- 1-1

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1.1 Using This Manual

1.2 Safety Notice

2. Product Description ---------------------------------------------- 2-1

2.1 Product Description

2.2 Product Main Features

2.3 System Specifications

3. Power Supply Unit (PSU) ---------------------------------------------- 3-1

3.1 Description

3.2 Specifications

3.3 Operation and Adjustment

3.4 System Alarm

3.5 PSU Block Diagram

3.6 PSU Operating Principle

4. Alarm Control Unit ---------------------------------------------- 4-1

4.1 Description

4.2 Specifications

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1-1

1-1

2-1

2-1

2-1

3-1

3-1

3-4

3-5

3-5

3-5

4-1

4-1

4.3 Alarm Control Unit Block Diagram

4.4 Settings and Control

5. DC Distribution ---------------------------------------------- 5-1

5.1 DC Cabling

5.2 Low Voltage Battery Disconnect (System
equipped with PDU)

5.3 Battery Connections (System equipped with
PDU)

5.4 Battery Temperature Probe Connection (System
equipped with PDU)

6. Installation ---------------------------------------------- 6-1

6.1 Preliminary Inspection

6.2 System Mounting

6.3 Module Installation

6.4 Shelf Wiring

6.5 AC Input Connections

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INDEX i

4-4

4-4

5-1

5-1

5-1

5-1

6-1

6-1

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DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

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6.6 Battery String Connections (System equipped

with PDU)

6.7 Temperature and Alarm Connections

6.8 EXT. Breaker trip signal I/P Connector Wiring

6.9 AC High Voltage Aux. Relay Output Wiring

7. System Start –Up Procedure ---------------------------------------------- 7-1

7.1 Initial Start-Up Preparation

7.3 Basic Functional Verification 7.2 No Load

Start-Up

7.4 DC Load Connections

7.5 System Functionality Check

7.6 System Operation

8. System Alarms and Troubleshooting ---------------------------------------------- 8-1

8.1 AC Fail Voltage Alarm Description

8.2 High Voltage Shutdown Alarm

8.3 High Voltage Alarm Description

8.4 Low Voltage Alarm

8.5 Low Voltage Disconnect Alarm (System

equipped with PDU)

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6-1

6-2

6-2

6-2

7-1

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7-1

7-1

8-1

8-1

8-1

8-2

8-2

8.6 Fuse Fail Alarm (System equipped with PDU)

8.7 Alarm Unit Fail

8.8 Rectifier Fail Alarm

9. Maintenance ---------------------------------------------- 9-1

9.1 Cleaning and Maintenance

9.2 Removing and Replacing a Rectifier Unit

10. Acronyms and Abbreviations ----------------------------------------------

ATTACHMENT

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INDEX ii

8-2

8-3

8-3

9-1

9-1

10-1 ~3

1 General

1.1 Using This Manual

This manual contains specifications and instructions to properly install and maintain the power supply system.
Component specifications and drawings are also included.

This manual contains information related to the operation and maintenance of the Alarm Control Unit (ALU),
the –48V/+24V Power Supply Unit (PSU), and the Distribution Module. Additional information is provided
on system status and alarms, troubleshooting, and system maintenance. Appendix figures of this manual
contains drawings, simple block diagram for different functional blocks and systems schematic.

Step-by-step procedures required for the installation and turn-up are detailed. All equipment parameter
setting, adjustments, and confirmation, as well as system monitoring, operations, and maintenance procedures,
are included.

Warnings are printed in bold, italic lettering. They alert the installation or maintenance craftsperson of a
potential hazard to either the equipment or the craftsperson if the warning is not followed.

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

1.2 Safety Notice

Delta Energy Systems is not liable for any hazards incurred by not following proper safety procedures.
Installation, operation, and maintenance personnel should always follow these safety rules:

1. Before installing the system, verify the AC input voltage and frequency, the AC breaker rating and type,
and other environmental conditions as noted in the specifications.

2. The system has passed stringent system testing prior to shipment. To avoid electrical shock. The
rectifier system requires a single ground point permanently connected to earth ground.

3. An AC breaker must provide adequate isolation between the system input and commercial AC main.

4. The environment should be dust free and controlled by an AC system. The area must be free of any
flammable vapors or fluids.

5. To avoid electrical hazard, the covers must not be removed on any component, including the ALU and
the rectifier.

6. Circuit breakers or fuses must be replaced with approved replacement circuit breakers meeting the
original design specification.

7.

All connections must be made per the latest issue of the applicable national and local codes.

1-1

2 Product Description

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

2.1 Product Description

This power Shelf consists of modular rectifiers, an Alarm Control Unit (ALU), and a DC distribution
module. Up to four rectifiers and an alarm unit can be equipped on a shelf containing an integrated distribution
module. The rectifiers can operate from a universal range of AC line voltages. The High Line (HL)
operations are defined at an AC line input range of 165VAC~ 264VAC. The Low Line (LL) operations are
defined at an AC line input range of 90 VAC-130 VAC.

The system is controlled and monitored by the ALU. System level rectifier voltage settings, system
status, and alarms are displayed on the ALU. The system float voltage, equalize voltage, and alarm thresholds
are set from RMS. The ALU also provides automatic derating of the output power over the whole operating
line voltages. Figure 1 shows different functional blocks of the system.

2.2 Product Main Features

The Power Shelf has the following main features:

 -48 VDC/120 Amps, or +24VDC/200Amps, N+1 redundancy

 Modular design for scalable, cost effective expansion

 Front access for simple installation and maintenance

 High power density

 Active Power Factor Correction (>. 99PFC)

 High efficiency

 Temperature compensated float voltage control

 Alarm Control Unit

 Low Voltage Battery Disconnect (LVBD) (System equipped with PDU)

 Remote Monitoring and control

2.3 System Specifications

The system specifications are provided in the following sections.

2.3.1 -48V Standard Power Shelf Configuration(MODUL NAME: ES48/120-JAAxx)

(1) AC Input: 175VAC ~ 275VAC, 48Amps. Max

(2) System Capacity: 120Amps. Max.

(3) Rectifier: -48V/30A×1~4

(4) Control and Supervisory Unit

Figure 1 shows a front view of shelf.

2-1

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Environmental Data

System Environmental Data

Specification Value

Operating temperature

Storage temperature

Humidity 0% to 95% RH

Altitude -300 ft. to 10,000 ft.

Weight Approximately 48 lbs.

EMI/FRI FCC Part 15, Class B and CISPR 22, Class B

Lightning/surge ANSI/IEEE C62.41-1, and IEC 1000-4-5

Seismic Bellcore GR-63-CORE, Zone 4

Safety CUL and UL Listed and Marked

2.3.2 +24V Standard Power Shelf Configuration(MODUL NAME: ES24/200-JAAxx)

(1) AC Input: 175VAC ~ 275VAC, 48Amps. Max

(2) System Capacity: 200Amps. Max.

(3) Rectifier: +24V/50A×1~4

(4) Control and Supervisory

0℃ to +50℃

-40℃ to +70℃

Maintenance Manual

Figure 1 shows a front view of shelf.

Environmental Data

System Environmental Data

Specification Value

Operating temperature

Storage temperature

0℃ to +50℃

-40℃ to +70℃

Humidity 0% to 95% RH

Altitude -300 ft. to 10,000 ft.

Weight Approximately 48 lbs.

Lightning/surge ANSI/IEEE C62.41-1, and IEC 1000-4-5

Seismic Bellcore GR-63-CORE, Zone 4

Safety CUL and UL Listed and Marked

2.3.3 -48V System with Power Distribution and Rectifiers(MODUL NAME: ES48/90-JBAxx)

(1) AC Input: 175VAC ~ 275VAC, 36Amps. Max

(2) System Capacity: 90Amps. Max.

(3) Rectifier: -48V/30A×1~3

(4) Control and Supervisory

(5) Load Distribution: 30A Breaker×5 @ Single Pole

(6) Low Voltage Disconnect Switch: 100A×1 @ Single Pole at Battery Side

(7) Battery Breaker: 100A×1

(8) AC Breaker

2-2

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 1-1 shows a front view of shelf.

Environmental Data

System Environmental Data

Specification Value

Operating temperature

Storage temperature

Humidity 0% to 95% RH

Altitude -300 ft. to 10,000 ft.

Weight Approximately 48 lbs.

Lightning/surge ANSI/IEEE C62.41-1, and IEC 1000-4-5

Seismic Bellcore GR-63-CORE, Zone 4

2.3.4 -48V System with Power Distribution and Rectifiers(MODUL NAME: ES48/90-JFAxx)

(1) AC Input: 175VAC ~ 275VAC, 36Amps. Max

(2) System Capacity: 90Amps. Max.

(3) Rectifier: -48V/30A×1~3

0℃ to +50℃

-40℃ to +70℃

(4) Control and Supervisory

(5) Load Distribution: 100A Breaker×4 @ Single Pole

(6) Low Voltage Disconnect Switch: 100A×1 @ Single Pole at Battery Side

Figure 1-1 shows a front view of shelf.

Environmental Data

System Environmental Data

Specification Value

Operating temperature

Storage temperature

0℃ to +50℃

-40℃ to +70℃

Humidity 0% to 95% RH

Altitude -300 ft. to 10,000 ft.

Weight Approximately 48 lbs.

EMI/FRI FCC Part 15, Class B and CISPR 22, Class B

Lightning/surge ANSI/IEEE C62.41-1, and IEC 1000-4-5

Seismic Bellcore GR-63-CORE, Zone 4

Safety CUL and UL Listed and Marked

2.4 Electrical Data

The system electrical data is provided in the following tables.

2.4.1 Input

2-3

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Table 1 displays the system input specifications.

Table 1 System Input Specifications

Specification Value

Nominal range 175 ~ 275VAC

90 ~ 275VAC Full Load

Operational range

150V ~ 175Vac de-rating to 80% Load

90V ~ 150Vac de-rating to 50% Load
50℃ ~ 65℃ de-rating 1500W

Frequency 45 ~ 65Hz

Power Factor >0.99 @ 220VAC, Full Load

THD <5% @ 220VAC, Full Load

Efficiency >90% @ 220VAC, Full Load

2.4.2 Output

Table 2 displays the system output specifications.

Table 2 System Output Specifications

Specification Value

DC Volts

38~60 VDC (-48V Version)
20~30 VDC (+24V Version)

Load regulation <1%

Line regulation <0.2%

Current Limit 110%

Current share <5%

Noise:

Audio band
Wide band
Acoustic

<2mv
<10 mVrms
<55 dBA

2.4.3 Status/Alarm Indicators

The Power Shelf has the following status/alarm indicators:

 Load Current

 AC ON

 Rectifier Fail Alarm (RFA)

 Current Limit (CL)

 Float/Equalize (FL/EQU)

 Major Alarm (MAJ)

 Minor Alarm (MIN)

 High Voltage Alarm (HV)

 High Voltage Shutdown (HVSD)

 Low Voltage Alarm (LV)

 Low Voltage Disconnect Open (LVDS OPEN)

 Fuse Blown (FUSE ALM)

 AC Fail (AC FAIL)

2-4

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

2.4.4 Mechanical Data

Dimension Value

Height 5.2 in. (132mm)

Depth 10.35 in. (263mm)

Width 3.3 in. (83.6mm)

2-5

3 Power Supply Unit (PSU)

DELTA MCS-1800 3U Power Sh

Installation, Operations and

Maintenance Manual

elf

3.1 Description

This rectifier units are rated at full load when operated from high line. For Low operation, the output is
derated to half load. This derating is automatically activated from the Alarm Control Unit (ALU). However,
the rectifier can operate on a stand-alone basis, if this ALU is removed or nonfunctional.

Warning: In the absence of the ALU, the automatic derating of the rectifiers at Low Line is not effective.

The modular design provides the flexibility to configure and expand the system as the load demand
increases. Each rectifier unit is swappable with front access for ease of maintenance without system shutdown,
providing uninterrupted service.

The rectifier unit has an active power factor correction of greater than 0.99 for maximum AC utilization.
Each module is equipped with an AC switch located at the front of the module. Figure 3 shows a front view of
PSU.

Note: The equipment is only for installation in a Restricted Access Location.
The equipment is used on a stationary equipment/unit only.

3.2 Specifications

Detailed rectifier specifications are provided in the following sections.

3.2.1 Electrical

Detailed electrical specifications for the rectifier are provided in this section.

Exceeding the 50% load limit at Low Line may damage the rectifiers.

3.2.1.1 Input

Table 6 displays the rectifier input specifications.

Table 6 Rectifier Input Specifications

Specification Value

Input Voltage

Input Current 12 Amps at 176 VAC, Full Load

Line Frequency 45 to 65 Hz

Power Factor >0.99, at 220 VAC Input, Full Load

THD <5%, at 220 VAC Input, Full Load

Efficiency

Inrush Current <12 Amps (peak), 220 VAC, Full Load, Cold Start

Start Time Delay
(Walk-In)

Protection Fuse

90VAC to 275VAC, Single Phase, (during 176 to 150VAC
derated to 80% Load, during 150 to 90VAC derated to 50% Load)

>90%, Full Load (-48V Version)

>88%, Full Load (+24V Version)

3 to 10 seconds

3-1

DELTA MCS-1800 3U Power Sh

elf

Installation, Operations and

Maintenance Manual

3.2.1.2 Output

Table 7 displays the rectifier output specifications.

Table 7 Rectifier Output Specifications

Specification Value

40 to 60VDC [factory preset at –54.3VDC, 30Amps (HL) /
15Amps (LL)] –48V Version

DC Output Voltage

20 to 30VDC [factory preset at 27.2VDC, 50Amps (HL) /
25Amps (LL)] +24V Version

Output Power

1800W Maximum (-48V Version)

1500W Maximum (+24V Version)

Regulation:

Load

Line

<1% (Load 0 to 100%)

<0.1%

Current Limit 110% Max. of Rated Output Current

Noise:

Audio Band

Wide Band

Acoustic

<2mV

<20 mVrms (10 KHz to 100 MHz)

<55 dBA @ 1M

Current Sharing <5% of Rated Output Current

Dynamic Response

10% to 90% Load Change Overshoot ≤5% Rated Output
Voltage Recovery Time <1 ms to ≤1% Rated Output Voltage

Protection Fuse

3.2.1.3 Protection

Table 8 displays the protection specifications.

Table 8 Protection Specifications

Condition Response

High Output Voltage (Exceeds
Preset Value)

Automatic Shutdown and Latch

Over Current/Output Short Automatic Shutdown and Recovery

Over Temperature Automatic Shutdown and Recovery

Brownout No Damage

AC Input Voltage High Automatic Shutdown and Recovery

AC Input Voltage Low Automatic Shutdown and Recovery

3-2

3.2.1.4 Adjustments

Table 9 displays the adjustments.

Table 9 Adjustments

Test Points (I+,I-) Current

Float Voltage (FLO) Variable Resistor or Setting on ALU

Current Limit (CL) Variable Resistor or Setting on ALU

3.2.2 Environmental

Table 10 displays the environmental specifications.

Table 10 Environmental Specifications

DELTA MCS-1800 3U Power Sh

Installation, Operations and

Maintenance Manual

Adjustment Description

Specification Value

elf

Operating temperature

Storage temperature

32 to +122℉ (0℃ to +50℃) OPTION

-40 to +185℉ (-40℃ to +85℃)

Humidity 0% to 95% Relative Humidity No condensing

Altitude -5.2”/132mm

Weight 3.3 Kg (7.26 lbs.)

EMI/FRI suppression Conforms to EN 55022, BS 6527 FCC Part 15 Subpart J,

and CISPR 22 Class A

Current harmonic Conforms to EN 61000-3-2/A12, EN 60555-2, IEC

1000-3-2 Class A

Voltage fluctuation Conforms to EN 61000-3-3M, EN 60555-3

Electrostatic discharge Conforms to EN 61000-4-2, IEC 1000-4-2, IEC 801-2

Level 4

Radiated susceptibility Conforms to IEC 1000-4-3, IEC 801-3 Level 3

Electrical fast transients Conforms to EN 61000-4-4, IEC 1000-4-4, IEC 801-4

Level 4

Conducted susceptibility Conforms to IEC 1000-4-6 Level 3

Lightning/surge Conforms to ANS/IEEE C62.41.-1, 1991 B3, IEC

1000-4-5 Level Special (6KV)

Safety Meets IEC 950, EN60950, UL/CUL/CE Approval

MTBF >150 K hours

Cooling Fan cooling

Heat dissipation

682 BTU/hour max. per module (-48V Version)
698 BTU/hour max. per module (+24V Version)

3-3

3.2.3 Status/Alarm Indicators

Table 11 displays the status alarm indicators

Table 11 Status Alarm Indicators

Indicator Color Function Description

LED Amber CL Current Limit

LED Green AC AC ON

LED Red RFA Rectifier Failure Alarm

3.2.4 Mechanical Data

Table 12 displays the rectifier mechanical data.

Table 12 Rectifier Mechanical Data

DELTA MCS-1800 3U Power Sh

Installation, Operations and

Maintenance Manual

elf

Dimension Value

Height 5.2 in. (132mm)

Depth 10.35 in. (263mm)

Width 3.3 in. (83.6mm)

3.3 Operation and Adjustment

All operating adjustments are made at the front panel of each rectifier. The following components are

located on each rectifier panel:

1. Float voltage adjustment

2. Current limit adjustment

3. Current test points

4. Alarm indicators

Figure 3 shows different indicators and adjustment points on this unit.

Rectifier adjustments must be done sequentially from the first through the fourth rectifier with AC applied.

All adjustments must be made with no load, and the batteries disconnected to ensure adjustment accuracy.

3.3.1 Start-Up

To start up the system, perform the following steps:

1. Aproximately 3 to 8 seconds after the AC applied, the RFA LED extinguishes.

3.3.2 Float Voltage Adjustment

Verify the required float voltage setting per battery manufacturer specification. If the factory setting differs
from the battery manufacturer recommended setting, the ALU float voltage parameter and each rectifier’s
float voltage must be adjusted to the new setting. A digital multimeter and a small screwdriver are required
to perform this procedure. Located the float voltage access point (FL) at the front of the rectifier.

To adjust the float voltage, perform the following steps:

1. Remove the ALU.

3-4

2. Place the digital multimeter probe in the V+ and V- output voltage connecter.

3. Adjust the float voltage by using a screwdriver to turn the FL point to the voltage value as shown on
the meter. The tolerance error should not exceed 0.02V.

Notes:

1. Turning the variable resistor adjustment point clockwise increases the value, and counterclockwise

2. Refer to Figure 3 (rectifier front view) for the location of V+, V- and FL point.

3. When the setting is completed, temperature and voltage compensation must be reset to the default
value.

3.3.3 Current Limit Setting

Warning: Current limit setting is not intended to be adjusted in the field. Users should only use it for

their reference.

Current limit adjustment is made by turning the CL variable resistor with the digital multimeter probes
in the I+, I- test points. This current limit is set at the factory. The factory setting is always the
maximum value of 110%. For a 48V/30 Amp rectifier, the computation for the current limit is

1.1×30=33 Amps.

The following adjustment procedure is for reference only:

1. At the rectifier, place the digital multimeter probes in the I+, I- test points.

2. Place a small screwdriver in the CL adjustment point.

3. Turn the variable resistor counterclockwise to increase the value. Turn the variable resistor
clockwise to decrease the current limit value.

DELTA MCS-1800 3U Power Sh

Installation, Operations and

Maintenance Manual

elf

3.4 System Alarm

During an alarm condition, the faulty rectifier illuminates its RFA light on the front panel. The rectifier
fail alarm signal is sent to the ALU, which processes the alarm, closes the RFA alarm contacts, and lights the
alarm LEDs.

3.5 PSU Block Diagram

Refer to Figure 5.

3.6 PSU Operating Principle

After applying the incoming line voltage to the rectifier, current is applied to the EMI filter and circulates
through protection components such as the AC circuit breaker and the fuse. The major functions of the
protection devices are to prevent the rectifier from being damaged by surge voltage, to efficiently reduce the
noise of differential mode and common mode, to eliminate the high frequency noise from input current, and to
prevent noise reverse to the source circuit.

The AC input voltage is rectified and converted to a 400VDC bus through a PFC boost stage. This PFC
stage maintains the Power Factor at >.99 and the Total Harmonic Distortion (THD) at <5%.

The 400 VDC bus voltages is modulated at a frequency higher than 100KHz and stepped down through a
transformer. Output of this transformer is rectified and filtered to provide the output DC voltage.

3-5

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

4 Alarm Control Unit

4.1 Description

The Alarm Control Unit (ALU) with RS232 & LAN interface and remote monitoring function provides
output alarms, alarm threshold adjustments, float and equalize voltage adjustments, temperature compensation
voltage settings, low voltage disconnect voltage threshold settings, an equalize charge timer, and system alarm
LEDs. In addition, the ALU automatically derates the system output current according to the following table:

Figure 2 shows a front view of Alarm control unit.

Table 13 Voltage Ranges

Input Voltage Range Output

90-150 VAC 50%

150-175 VAC 80%

176-275 VAC 100%

The module is hot swappable.

4.2 Specifications

4.2.1 Input Characteristics

Table 14 displays the input characteristics.

Table 14 Input Characteristics

Characteristic Value

Input Voltage Range

Input Current <0.5 Amps

4.2.2 Push Buttons

This alarm unit has 3 push buttons on the front panel. These push buttons are used to control the

alarm unit. Following are possible functions these buttons will act:

Control

- FL/EQU

- HVSD RST

- SMR RST

- Voltage/Current Display

40V to 59.5V for 48V system

20V to 30V for 24V system

4-1

DELTA MCS-1800 3U Power Shelf

Settings Description

FL/EQU

- Function

HVSD RST

- Function

SMR RST

- Function

Voltage/Current

- Function

Notice: When SMR turn off , the system will detect RFA warning in ES48/90-JFAxx.

When SMR vacant , the system will detect RFA warning in other system.

4.2.3 Indicators

Table 15 displays the ALU indicators.

- This button is used to manually select SMR into float or equalize state.

- When SMRs shut down resulting from DC high voltage. This button is
used to reset alarm state.

System will detect RFA warning when SMRs are vacant or turned off.
However, if the button is pushed at this time, the system will stop
sending the warning.

This button is used to change the voltage or current of LED display.

Installation, Operations and

Maintenance Manual

Table 15 ALU Indicators

Indicator Color Function Description

LED1 Green FL System Float State

LED2 Yellow EQU System Equalize State

LED3 Red HV DC High Voltage Alarm-Minor

LED4 Red LV DC Low Voltage Alarm-Minor

LED5 Yellow MIN System Minor Alarm

LED6 Red MAJ System Major Alarm

LED7 Red HVSD High Voltage Shutdown (DC)

LED8 Red AC FAIL Loss of AC Input

LED9 Red FUSE ALM DC Output or Breaker SW. Trip

LED10 Red LVDS OPEN Low Voltage Disconnect Open

4.2.4 Relay Output

Table 16 displays the relay output.(Please refer to Figure 5)

Table 16 Relay Output

Relay Function Description Relay Function Description

Relay1 ACF AC Failure Relay5 LV

Relay2 MAJ Major Alarm Relay6 LVD

Relay3 HVSD High Voltage Shutdown Relay7 FA

Relay4 HV

DC High Voltage
Alarm-Minor

DC Low Voltage
Alarm-Minor
Low Voltage Disconnect
Open
Breaker Trip
Alarm

Relay8 MIN Minor Alarm

4-2

4.2.5 ALU Alarm Signal Descriptions

MAJ: Major Alarm

(1) 2 or above rectifiers fail.

(2) Temperature sensor disconnects.

(3) AC Low Voltage Alarm.

(4) AC High Voltage Alarm.

(5) LVDS Trip Alarm. (System equipped with PDU)

(6) Battery or Ambient over temperature. (System equipped with PDU)

(7) HVSD Alarm.

(8) Breaker Trip Alarm.

MIN: Minor Alarm

(1) One rectifier fail.

(2) Current Limit Alarm.

(3) DC High Voltage Alarm.

(4) DC Low Voltage Alarm.

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

HV: The alarm condition exists when the DC output voltage is higher than the parameter setting.

LV: The alarm condition exists when the DC output voltage is lower than the parameter setting.

AC Fail: The alarm condition exists when the AC voltage is absent.

LVDS: The alarm condition exists when the DC output voltage is lower than the threshold voltage.

(System equipped with PDU)

Fuse Fail: The alarm condition exists when the battery switch trip off or the DC Load output switch trip off.

4.2.6 Physical

Table 18 displays the ALU mechanical data.

Table 18 ALU Mechanical Data

Dimension Value

Height 5.2 in. (132mm)

Depth 9.9 in. (251.3mm)

Width 1.9 in. (46.2mm)

4-3

4.2.7 Environmental

Table 19 displays the environmental specifications.

Table 19 Environmental Specifications

Specification Value

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Operating temperature

Storage temperature

Humidity 0% to 95% Relative Humidity No condensing

Altitude -500 to 10,000 ft.

Weight 2.64 lbs. (1.2Kg)

ESD IEC 1000-4-2 (Contact 4KV Air 8KV)

4.2.8 Remote monitoring and control

The ALU provide the flowing remote monitoring methods.

1. Use RS232 Interface.

2. Use Internet Web server function (RJ45)-(Optional)

4.2.10 Parameter Modify

Enter the Remote monitoring software or use the internet Brower to modify the parameter.

32℉ to +122℉ (0℃ to +50℃)

-40℉ to +185℉ (-40℃ to +85℃)

4.3 Alarm Control Unit Block Diagram

Refer to Figure 7.

4.4. Settings and Control

Settings:

Settings Description Comment

DC High Voltage Shutdown

Function
Default

Recovery

Steps

DC High Voltage Alarm

Function
Default

Recovery

Steps

DC Low Voltage Alarm

Function
Default

Recovery

- High voltage shutdown threshold adjustment

- 58.5VDC (-48V System)

- 29.5VDC (+24V System)

- 57.5VDC (-48V System)

- 28.5VDC (+24V System)

- 0.1VDC

- High voltage alarm threshold adjustment

- 57.5VDC (-48V System)

- 29VDC (+24V System)

- 56.5VDC (-48V System)

- 28VDC (+24V System)

- 0.1VDC

- Low voltage alarm threshold adjustment

- 44.0VDC (-48V System)

- 23VDC (+24V System)

- 45.0VDC (-48V System)

- 24VDC (+24V System)

4-4

Settings Description Comment

Steps - 0.1VDC

AC High Voltage Alarm

Function
Default
Recovery
Steps

AC Low Voltage Alarm

Function
Default
Recovery
Steps

Temperature Alarm

Function
Default
Steps

Site ID

Function
Setting

Floating / Equalize charging
voltage

Function
Default - Float

Steps - 0.1V

LVDS Trip Voltage

Function
Default - 42VDC (-48V System)

Recovery - When one rectifier work normally and not in the

Steps - 0.1V

Compensation On/Off

Function

Setting
Default

Compensation Volt. Range

Function
Default

Steps

Equalize Duration Time

Function

Default
Steps

Mains Recovery Charging
Current Limited

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

- AC high voltage alarm threshold adjustment

- 264V

- 261V

- 1V

- AC Low voltage alarm threshold adjustment

- 176V

- 179V

- 1V

- Battery Temperature alarm

- 104℉ (40℃)

- 1℃

- Set identification number for this site

- 4 digits and number range is 0-9

- Float / Equalize charging voltage

- 54.3VDC (-48V System)

- 27.2VDC (+24V System)

- EQUALIZE

- 56.4VDC (-48V System)

- 28.2VDC (+24V System)

- Sets LVDS trip voltage

- 22VDC (+24V System)

CL Mode

- Enable / Disable Temperature Compensation
feature

- ON/OFF

- On

- To set Temperature Compensation Voltage

- -1.3VDC~+1.3VDC (-48V System)

- -0.7VDC~+0.7VDC (+24V System)

- 0.1V

- To set the duration of equalizes charging after
AC recovery. This setting is active when battery
deeply discharge resulting from AC fail.

- 1-10 hours

- 1 hour

- When mains recovery to avoid the charging
current too large, CSU will limit the charging
current.

- [ (IL+ Max. Cap.) / Parameter] / available SMR

4-5

Settings Description Comment

Function
Battery Max. Capacity

Default
Range

Parameter

Default
Range

Temperature Shut Down

Function
Default
Recovery

Control:

Settings Description Comment

Remote SMR On/Off

- Function

- Description - CSU automatically shuts down SMR in case of

Floating / Equalize control

- Function

- Description

HVSD Recovery

- Function

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

- 74AH

- 1~2500 AH

- 4

- 1~20

- High Temperature Shutdown

- 149℉

- 122℉

- Remote SMR on/off capability exists through the
CSU control.

DC high voltage.

- Users can manually shut down SMR from
Remote Management System.

- SMR floating/equalize status can be set through

the CSU control.

- CSU automatically transfer SMR to floating

mode in case of mains recover after deep
discharge resulted from blackout/battery test

- Users can manually set SMR to floating or

equalize from CSU.

- When system HVSD alarm recovery and system

voltage reduce to normal, this function is used to
reset the HVSD alarm

SMR Shutdown
(1-3)

4-6

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

5 DC Distribution

5.1 DC Cabling

You can find DC output which marked Load + and Load – behind the shelf of the left hand side.

5.2 Low Voltage Battery Disconnect (System equipped with PDU)

The low voltage disconnect contactor is installed in front of the battery connection bus. Battery and system
bus are connected in parallel. When LVDS opens, it disconnects the batteries from the system bus.

5.3 Battery Connections (System equipped with PDU)

The battery connections which are behind the distribution module should be made through the breaker.
BAT + for battery positive and BAT – for battery negative.

5.4 Battery Temperature Probe Connection (System equipped with PDU)

Maintenance Manual

The battery temperature probe senses the battery temperature and sends the signal back to the ALU. The
temperature is used to determine the temperature compensation voltage. A temperature sensor is included
with each Power Shelf. To connect the temperature sensor, perform the following steps:

1. Connect the sensor to the connector labeled TB located behind the shelf.

2. Attach the copper lug sensor to the center position.

5-1

6 Installation

6.1 Preliminary Inspection

Prior to removing the system from the crate, note any damage to the carton. Remove the system from the
packaging and inspect the shelf and components for any dents or damage. If any damage is noted, contact
the carrier immediately.

6.2 System Mounting

The power system is typically shipped with the shelf in one carton and rectifiers in individual cartons. The
shelf typically is shipped with the ALU and the distribution module. The module can be mounted in a
19”relay rack provided by the customer.

This system allows the relay rack to be installed as close to a rear wall as is necessary for the installation.
The front of the system should be clear of all obstruction and allow room for proper ventilation, installation,
and maintenance.

6.3 Module Installation

DELTA MCS-180 3U 0 Power Shelf

Installation, Operations and

Maintenance Manual

In order to reduce the weight of the system, all power modules can be removed from the shelf when mounting
the shelf onto a rack.

1) Ensure that the AC power is isolation.

2) Loosen the fixed thumbscrew on the rectifier and pull the rectifier out.

3) Loosen the fixed thumbscrew on the ALU panel and pull the ALU out.

4) Reverse the procedure, to install the rectifier and ALU.

6.4 Shelf Wiring

The shelf comes fully assembled and is equipped with the ALU and the distribution module. All internal
connections are made at the factory. No internal, shelf, or module wiring is required.

6.5 AC Input Connections

The power system is equipped with one power terminal located at the center rear of the shelf.

Warning: 1. AC power wire cannot less than AWG 10 and failure to use the appropriate power wire

causes safety hazards.

2. Each shelf requires a properly grounded AC input feeds supplied by Delta.

3. The system operates at AC voltages that can produce fatal electrical shock. Installation
and maintenance personnel must observe all safety precautions.

4. Confirm the operating voltage and proper grounding of the incoming line before
proceeding.

6.6 Battery String Connections (System equipped with PDU)

Warning: 1. Verify the polarity of the battery leads prior to connecting the battery cables to the system.

Failure to connect the battery cables correctly to the system can cause damage to batteries
and the system.

6-1

2. While connecting the battery cables inside the distribution module, make sure the system

is completely disenergized (that is, the AC lines are turned off and the battery cables are
disconnected at the battery end).

3. The system voltage (rectifier output voltage) is –48VDC. Connect the positive battery

cable(s) to the BATT + and connect the negative battery cable(s) to the BATT -.

6.7 Temperature and Alarm Connections

6.7.1 Battery Temperature Sensors

One (1) battery sensor cable is provided with each system. The connection method please refers to
section 5.4.

6.7.2 External Alarm Connections

1. Table 21 Alarm Terminal Block Pin Assignments

Alarm Description

ACF AC Fail

MAJ Major

HVSD High Voltage Shutdown

HV High Voltage Alarm

LV Low Voltage Alarm

LVD Low Voltage Disconnect

FA Fuse Alarm

MIN Minor

DELTA MCS-180 3U 0 Power Shelf

Installation, Operations and

Maintenance Manual

2. Each alarm connection is provided with a normally close relay contact. This contact is capable of
carrying 0.5 Amp DC at 30VDC on a continuous basis.

3. Warning: All external circuits connected to these alarm relay terminals must be secondary and

properly isolated from the incoming line.

6.8 Connect the PDU signal cables to the rear of the shelf which are mark “EXT. Breaker trip
signal I/P” connector.

The “FUSE ALM” LED on the front panel of ALU will light up when the breaker open.

6.9 AC High Voltage Aux. Relay output wiring

The connection point of “AC High Voltage Trigger Relay” which is on the rear of shelf will close when the
AC input voltage is higher than the setting value normally it’s open.

6-2

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

7 System Start-Up Procedure

7.1 Initial Start-Up Preparation

1. Verify all connections prior to starting this section.

2. Confirm the operating voltage before proceeding.

3. Ensure that the AC line is properly grounded.

4. Ensure the battery DC circuit breaker is switched to the “OFF” position

5. Ensure the PSU breaker is switched to the “OFF” position.

7.2 No Load Start-Up

The system can be started up without a load. To start up the system, perform the following steps:

1. Switch all DC distribution circuit breakers to the “OFF” position and/or remove all the fuses. If there is
the PDU in the system.

2. Verify that the battery is not connected to the system battery bus or ensure the battery switch in the “OFF”
position.

3. Check the ALU for alarm and status conditions.

7.3 Basic Functional Verification

After system start-up, basic functional verification should proceed as follows:

1. Check the ALU status and alarm LEDs.

2. Compare the rectifier DC voltage readings at the ALU with the output voltage of each rectifier by using
digital multimeter (measure at the V+ and V– points located on the front of each rectifier).

3. The “FUSE ALM” LED on the panel light because the battery breaker is switched to “OFF”.

7.4 DC Load Connections

1. Connect the positive load wires to the Load +.

2. Connect the negative load cable to the Load -.

Please refer to section 5 DC Distribution.

7.5 System Functionality Check

Control and supervisory functional testing can be performed at the ALU after the basic functional testing

is completed and the DC load is connected.

7.5.1 System Status and Alarms

Check the status of the equipment by viewing the ALU alarm and status LEDs.

7.6 System Operation

Upon completion of the system functional testing, the system is operational.

7-1

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

8 System Alarms and Troubleshooting

8.1 AC Fail Voltage Alarm Description

8.1.1 Description

If the ALU detects an input AC voltage below 50 VAC, the ALU sends an AC Fail alarm signal and
activates the dry contact. The AC Fail LED on the ALU panel lights up. When AC voltage is restored to the
nominal input voltage, the ALU extinguishes the AC Fail LED, and returns the contact to the normally closed
position.

8.1.2 Troubleshooting

The AC Fail alarm is normally caused by a commercial AC interruption due to a storm or maintenance.
If commercial AC is detected at the AC panel, check the rectifier input breakers in the AC panel for a tripped or
failed breaker.

Warning: The ALU senses the AC line through the AC Input terminal. If this connection is missing, the

system generates an AC Fail alarm.

8.2 High Voltage Shutdown Alarm

8.2.1 Description

When the ALU detects the output DC voltage exceeding the HVSD threshold setting, the ALU sends an
HVSD alarm signal and activates the dry contact. The ALU lights the HVSD LED located on the ALU panel
and shuts down each rectifier. At this point, the system is running on reserve batteries. When the DC voltage
falls below the HVSD threshold voltage, and push the HVSD RST Button, then the system recovers. The ALU
extinguishes the HVSD LED, returns the rectifiers to service, and closes the normally closed set of contacts.

8.2.2 Troubleshooting

High voltage shutdown occurs when the output voltage exceeds the HVSD threshold. This can be caused
by a rectifier failure, the system equalize voltage exceeding the HVSD threshold, or temperature compensation
exceeding the HVSD threshold setting.

1. Restart the rectifiers by resetting the HVSD RST button located on the ALU.

2. Verify the output voltage of each rectifier in both float and equalize.

3. Verify that the equalize voltage setting does not exceed the HVSD threshold setting.

4. Verify the temperature compensation voltage setting. Ensure that Temp Comp does not exceed the
HVSD threshold setting when operating in cold temperatures.

8.3 High Voltage Alarm Description

8.3.1 Description

The High Voltage alarm (HV) is a minor alarm activated when the DC output voltage exceeds the HV
threshold setting. When the system voltage exceeds the HV setting value, the ALU sends the HV alarm signal,
lights the HV LED located on the ALU panel, and activates the HV alarm contact. The rectifiers remain on
line during this minor alarm condition. When the system voltage decreases below the threshold setting, the
ALU extinguishes the HV LED and deactivates the HV alarm contact.

8-1

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

8.3.2 Troubleshooting

The HV alarm is usually caused when the equalize voltage exceeds the HV threshold setting. Another

probable cause that the temperature compensation voltage exceeds the HV threshold during cold temperature
operation. During this alarm condition, the system continues to operate.

8.4 Low Voltage Alarm

8.4.1 Description

The Low Voltage alarm (LV) is a minor alarm activated when the DC output voltage decreases below the

LV threshold setting. When the system voltage decreases below the LV LED located on the ALU panel, and
activates the LV alarm contact. The rectifiers remain on line during this minor alarm condition. When the
system voltage increases above the threshold setting, the ALU extinguishes the LV LED and deactivates the LV
alarm contact.

8.4.2 Troubleshooting

The LV alarm condition occurs during a brownout condition or prior to a complete AC Fail condition

caused by commercial AC problem conditions.

Another probable cause is that the temperature compensation voltage decreases the float voltage below the

LV threshold during hot temperature operation. During this alarm condition, the system continues to operate.

8.5 Low Voltage Disconnect Alarm (System equipped with PDU)

8.5.1 Description

During an AC Fail condition, the rectifiers are shut down and the reserve batteries begin to discharge.

When the battery cells discharge below the LVD setting, the ALU lights the LVD LED on the ALU panel,
activates the LVDS OPEN alarm contact, and opens the LVDS contactor. When the AC recovers, the LVBD
recovers automatically. The ALU extinguishes the LVD LED and resets the normally closed set of alarm
contacts.

8.5.2 Troubleshooting

If the battery disconnect switch remains open after voltage is restored to the rectifiers, one of the following

is occurring:

1. The ALU may be faulty. Swap out the ALU with a spare and verify voltage settings.

2. The LVBD coil windings may be open. With a digital multimeter, check the LVBD coil windings.

8.6 Fuse/Circuit Breaker Fail Alarm (System equipped with PDU)

8.6.1 Description

If the DC load output fuse opens or battery switch trip off, the ALU sends the alarm condition, lights the

LED on the ALU panel, and activates the Fuse Fail alarm.

8.6.2 Troubleshooting

To troubleshoot the fuse/circuit breaker fail alarm condition, perform the following steps:

1. Verify that the fuse/circuit breaker is the proper size (use 80% derating guide).

2. Verify that the external fault that might cause fuse/circuit breaker tripping is removed.

3. Replace the blown fuse with a fuse with the same rating or of the corrected value. In case of a circuit

8-2

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

breaker, turn it on. If necessary replace with the correct size fuse.

If the fuse/circuit breaker continues to trip, perform the following steps:

1. Check the DC branch load to ensure tat the fuse/ circuit breaker is the correct size.

2. If the branch load exceeds the fuse/circuit breaker rating, the device must be changed to a higher rating.

3. Install a fuse/circuit breaker with a higher rating.

Warning: Ensure that the device rating does not exceed the branch load wire capacity. If the device

rating is higher than the branch load wire rating, the branch load wire must be changed to a
larger wire. Failure to protect the branch load wire may result in overheating and fire.

8.7 Alarm Unit Fail

8.7.1 Description

During an ALU fail condition, the ALU fail and status LEDs are extinguished, and all alarm contacts open.

During an ALU failure, the rectifiers status changes from equalize to float or remains in the float condition.
The LVBD does not open during an ALU failure.

8.7.2 Troubleshooting

To troubleshoot the ALU fail condition, perform the following steps:

1. Check the input fuse located on the rear of the ALU. Replace if blown.

2. Check the DC input connectors for proper connections.

3. Replace with a spare and send the faulty unit to Delta for repair.

8.8 Rectifier Fail Alarm

(1) If one rectifier fails, the MIN contacts open, and the MIN LED on the ALU lights. When two rectifiers

fail, the MAJ alarm contact is opened, and the MAJ LED lights.

Warning: Do not open the rectifier unit. There are no serviceable parts.

(2) If you want to ignore the MAJ or MIN alarm when you pull out the rectifiers from the slots, just please

press the SMR RST button on the ALU.

(3) If you insert the above rectifier back to the slot, then pull out after the “FL” LED on the SMR panel light

up. The system will alarm in the “MIN” mode.

That means if we repeat to pull out and insert in and pull out the rectifier, the condition described in item
(2) will be cleared.

8-3

DELTA MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

9 Maintenance

9.1 Cleaning and Maintenance

9.1.1 General

Special maintenance is not necessary for this system, unless the system is being operated in a severely
harsh environment (dusty environment). The front panels and the cover of the DC distribution cabinet were
treated with a special coating. Do not use organic cleanser or volatile solvent because corrosion damage
may occur. For periodic cleaning, brush the dust from the cover and panel. If necessary, use a gentle
cleanser or a lightly dampened lint free cloth to remove any dirt or smudges.

9.1.2 Periodic Maintenance

Periodic maintenance is not required for normal operation. If necessary, wipe dust from the front of
the power system using a lint free, soft cloth and gently wipe the front of the distribution module, the ALU,
and the rectifiers. If necessary, use a gentle detergent to clean.

Warning: Do not use a spray cleanser to clean the equipment. Using a spray cleanser directly on the

equipment can result in serious equipment damage.

9.2 Removing and Replacing a Rectifier Unit

9.2.1 Removing a Rectifier

Warning: Do not touch the DC output bus when pulling out the PSU module.

To remove a rectifier, perform the following steps.

1. Switch off PSU module.

2. Loosen the captive retaining screws located on the bottom of the front panel.

3. Pull out the rectifier unit slowly from the shelf.

9.2.2 Replacing a Rectifier

To replace a rectifier, perform the following steps:

1. Make sure the breaker on the front panel of PSU is switched off.

2. Install the rectifier unit carefully. Place the rectifier on the shelf, ensuring that the rails are on the
track.

Warning: Do not force the module into the slot. If does not slide in and connect easily, remove and reset

the unit.

3. Lock the rectifier into position by screwing in the captive retaining screws located at the bottom of
the rectifier.

4. Switch on the PSU and check the AC ON LED lights on the front of the PSU on the front of the
rectifier. AC ON LED lights.

9-1

10 Acronyms and Abbreviations

Delta MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

--- A ---

ALU Alarm Control Unit
Amp Ampere
ANSI American National Standards Institute

--- B ---

BS British Standard
BTU British Thermal Unit

--- C ---

C Centigrade
CB Circuit Breaker
CE European Community
CISPR International Special Committee on Radio Interference
CL Current Limit

UL

C

Canadian Underwriters Laboratory

--- D ---

--- E ---

EMI Electro-Magnetic Interference
ESD Electrostatic Discharge

--- F ---

F Fahrenheit
FCC Federal Communications Commission
Ft. Foot

--- G ---

--- H ---

--- I ---

GND Ground

HL High Line
HV High Voltage
HVSD High Voltage Shutdown
Hz Hertz

IEC International Electronics Commission
IEEE Institute of Electrical and Electronics Engineers
In. Inch

--- J ---

--- K ---

Kg. Kilogram
KHz Kilohertz

10-1

--- L ---

--- M ---

KHz Kilohertz
KV Kilovolt
KW Kilowatt

Lb. Pound
LED Light-Emitting Diode
LL Low Line
LV Low Voltage
LVD Low Voltage Disconnect
LVBD Low Vo ltage Battery Disconnect
LVDS Low Voltage Disconnect Switch

M Meter
Max. Maximum
MHz Megahertz
Mm Millimeter
Ms Millisecond
MTBF Mean Time Between Failure
MV Millivolt
mVrms Millivolt root root mean square

Delta MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

--- N ---

NEMA National Electrical Manufacturers Association
No. Number

--- O ---

--- P ---

PF Power Factor
PFC Power Factor Correction

PSU Power Supply Unit

--- Q ---

Qty. Quantity

--- R ---

RFA Rectifier Failure Alarm
RFI Radio Frequency Interference
RH Relative Humidity
RMA Return Material Authorization

--- S ---

--- T ---

10-2

TB Terminal Block
THD Total Harmonic Distortion

--- U ---

UL Underwriters Laboratory

--- V ---

V Volt
VAC Volts AC
VDC Volts DC

--- W ---

W Watt

--- X ---

--- Y ---

--- Z ---

Delta MCS-1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

10-3

Delta MCS 1800 3U

Power Shelf

ATTACHMENT

DELTA ELECTRONICS, INC.

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 1: ES 48/120-JAAxx、ES 24/200-JAAxx (-48V/+24VPower Shelf)

I+

I-

FLO
CL

RFA
CL
AC ON

Power Supply Unit

I+

I-

FLO
CL

RFA
CL
AC ON

I+

I-

FLO
CL

RFA
CL
AC ON

OFF

AC

ON

OFF

AC

ON

OFF

AC

ON

I+

I-

FLO
CL

RFA
CL
AC ON

Alarm Control Unit

OFF

AC

ON

Power Shelf

REV: 00 A-1

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 1-1: ES 48/120-JAAxx 、 ES 24/200-JAAxx (DC Output Lug

Distribution)

DETAIL "A"

台達電子工業股份有限公司

交換式電源供應器

EXT: Breaker Trip Signal I/P

Alarm Relay Output

DC Output

Current Signal Input

PDU Detect Control Signal Input

REV: 00 A-2

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 1-2: ES 48/120-JAAxx 、 ES 24/200-JAAxx (Signal connection

Connectors for External Distribution Unit )

REV: 00 A-3

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 1-3: ES 48/120-JAAxx、ES 24/200-JAAxx (Battery Temperature

and Alarm Relay Output Connectors)

BATTERY TEMPERATURE DETECT SIGNAL INPUT

1

ALARM RELAY

13

14

25

ALARM RELAY OUTPUT

REV: 00 A-4

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 1-4: ES 48/120-JAAxx (Shelf Wiring MCS 1800 Series Shelf)

REV: 00 A-5

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 1-5: ES 24/200-JAAxx (Shelf Wiring Diagram)

REV: 00 A-6

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Figure 2: ES 48/90-JBAxx (-48V Power Shelf With PDU)

Maintenance Manual

REV: 00 A-7

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 2-1: ES 48/90-JBAxx (DC Output Lug Distribution)

REV: 00 A-8

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 2-2: ES 48/90-JBAxx (Load Cable and Battery String

Connection Terminals)

REV: 00 A-9

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 2-3: ES 48/90-JBAxx (Battery Temperature and Alarm Relay

Output Connectors)

台達電子工業股份有限公司

交換式電源供應器

REV: 00 A-10

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 2-4: ES 48/90-JBAxx (Battery and Load Breaker Distribution)

REV: 00 A-11

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 2-5: ES 48/90-JBAxx (Shelf Wiring MCS 1800 Series Shelf)

REV: 00 A-12

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 3: ES 48/90-JFAxx (-48V Power Shelf With PDU)

I+

I-

FLO
CL

RFA
CL

AC ON

OFF

AC

ON

Power Supply Unit

I+

I-

FLO
CL

RFA
CL

AC ON

OFF

AC

ON

I+

I-

FLO
CL

RFA
CL
AC ON

OFF

AC

ON

Power Distribution Unit

Alarm Control Unit

Power Shelf

REV: 00 A-13

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 3-1: ES 48/90-JFAxx (Alarm Relay Output connectors)

台達電子工業股份有限公司

交換式電源供應器

DETAIL "A"

Alarm Relay Output

REV: 00 A-14

DELTA MCS 1800 3U Power Shelf

Figure 3-2: ES 48/90-JFAxx (AC Input Connector)

Installation, Operations and

Maintenance Manual

AC INPUT TERMINAL

(USE 1015 6AWG~10AWG)

REV: 00 A-15

DELTA MCS 1800 3U Power Shelf

Figure 3-3: ES 48/90-JFAxx (Battery Temperature)

Installation, Operations and

Maintenance Manual

BATTERY TEMPERATURE DETECT SIGNAL INPUT

REV: 00 A-16

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Figure 3-4 ES 48/90-JFAxx (DC Output Lug Distribution)

Maintenance Manual

(USE 1015 4AWG~8AWG)

BATT. -48V TERMINAL

(USE 1015 4AWG~8AWG)

LOAD -48V TERMINAL

BATT+0V TERMINAL

(USE 1015 4AWG~8AWG)

LOAD +0V TERMINAL

(USE 1015 4AWG~8AWG)

REV: 00 A-17

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Figure 3-5: ES 48/90-JFAxx (Shelf Wiring MCS 1800 Series Shelf)

REV: 00 A-18

Figure 4: Alarm Control Unit

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Manual Float/
Equalizing But ton

High Voltage Shut
Down Reset

SMR RFA
Warning Res e t

Alarm/Status

Indicator LEDS

System Voltage

Measurment

System Current
Measurement

RS232 Interface

LAN Interface

REV: 00 A-20

Figure 4-1: Alarm Control Unit

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Manual Float/

Equalizing Button

High Voltage Shut
Down Reset

SMR RFA

Warning Reset

Alarm/Status

Indicator LEDS

System Voltage

Measurment

System Curre nt

Measurement

RS232 Interface

REV: 00 A-21

Figure 5: Power Supply Unit

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

REV: 00 A-22

Figure 6: ALU Block Diagram

Alarm Output Relay

and LED Indicator

LVDS Contact Control

Current Limit Signal

Voltage Output

EEPROM

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

RS232 Communication

WEB Communication

D/O

A/D

SSP

PWM

USART

D/I

SMR Current (1-5)

Load Current (1)

Batt. Temperature

DC Voltage

AC voltage

Current

SMR Fail Alarm Detection

SMR Current Limit

Detection

Temp. Sensor Lock Off

Breaker or Fuse Fail

FL/EQU Exchange Signal

SMR Fail Reset

HVSD Alarm Reset

REV: 00 A-23

Figure 7: SMR Block Diagram

Bid

Shift

C

DELTA MCS 1800 3U Power Shelf

Installation, Operations and

Maintenance Manual

Output

Full

Phase

Rectifier

DC/DC

Vo +

Vo -

DC/DC Output

Protection Filter

Controller & Fuse

Fan. Connector

C.K.T.

e

I/P Bridg

Input Fuse

er

PFC Boost

Convert

EMI Filter

Inrush C.K.T.

L

N

FG

Controller

PFC

&

Aux. Power

Driver C.K.T.

REV: 00 A-24

TAIPEI OFFICE

186 RUEY KUANG ROAD, NEIHU
TAIPEI 114, TAIWAN, R.O.C.
TEL : [phone]
FAX : [phone]

CHUNGLI PLANT

3 TUNG YUAN ROAD,
CHUNGLI INDUSTRIAL ZONE,
CHUNGLI, TAOYUAN HSIEN 320, TAIWAN, R.O.C.
TEL. [phone]
FAX. [phone]

P/N: MCS-1800 Power Shelf