1 (3) 901210-03/02

TAC Vista IV®

TAC Menta® 20 Feb 2002

Subject to modification.

DPU 7920I/NET

® Seven

The door processor unit 7920 (DPU-7920) functions aseither a stand-alone device or as part of a larger local areanetwork (LAN) host system. It controls up to two doors withentry reader inputs, or one door with entry and exit readerinputs, eight universal inputs, and eight relay contactoutputs.

By processing input data with programmed information, theDPU controls access into and exit from an area. It canmonitor the status of the lock and door, routing statusinformation to selected CRT displays and printers, andgenerate fault messages according to its programming.The DPU-7920 supports a total of 48,000 users.

Recommended enclosure: ENCL7920(Refer to enclosures datasheet)

Recommended power supply: XFMR6(Refer to transformers datasheet)

Installation guide for DPU7920: TCON117

Communication Ports:Sub-LAN port

Baud Rate ................. 9,600Protocol ..................... ProprietaryTransport .................. RS 485 multi-drop

asynchronous, polling(open or closed loop)

Connector ................. 2-part screw terminalNetwork Wiring Requirements:

Length ....................... 5,000 feet per segmentExtended Length ....... 25,000 feet with repeatersConnector ................. 2-part screw terminalCable Type ................ Belden 9184 or equivalent

twisted pair shieldedCable Size ................. 30pF/ft between conductors

and >55pF/ft conductor toshield

Reader Wiring Requirements:General

I/DISC ........................ 2 twisted pair shielded,Belden # 9184 or 9855

Wiegand .................... 8 conductor shielded Belden# 9536 / 9537 (500 ft. max)

ABA 115 & 85 ............ 8 conductor shielded Belden# 9305 / 8725

Hardware Details:Processor ................. Seimens™ 80C535 operating

at a clock speed of11.0592 Mhz.

TECHNICAL DATAEPROM ..................... 64KBStatic RAM ................. 128KBBattery support .......... Onboard ni-cad,

rechargeable, 30 daysClock/Calendar ......... Crystal controlled, real time

Physical Details:General

Power ........................ 24Vac, ±10%, 50/60Hz,Requirements 1.2A max or 24Vdc, ±10%,

1.2A maxOperating .................. 32°F to 122°F withoutTemperature battery-backup 50°F to 100°F

with lead-acid battery-backupOperating Humidity ... 10-80% RH, non-condensing

Battery Backup OptionType .......................... Gel cell, mmaintenance free,

rechargeableCapacity .................... 4AH, 12Vdc for up to 8 hours

of normal operation(excluding power for lockingmechanism, which must bepowered separately)

Charge Current 2A max (short circuit),.8A typical

Power Supply ............ 115Vac or 250Vactransformer (50/60 Hz +15%),75VA max

Power Failure ........... Standard, using internalNotification detection logicWeight ....................... 5.5 lbs

Door Processing Unit

TECHNICAL DATA

Baseplate VersionSize ........................... 9.6"L x 10"W x 1.5"DWeight ....................... 2lbs

Enclosure VersionSize ........................... 14.25"L x 14.25"W x 3.5"DWeight ....................... 13 lbsWeight with Battery ... 18.5 lbs

Controller Capacities:Tenants and Card Holders

Number of Tenants .. Up to 255Card Holders ............ 48,000 (24,000 per door)

SchedulesPersonnel ................. Up to 31 per door eachSchedules containing a seven-day week,

seven special days and twotemporary schedules. Eachschedule contains sevenintervals with user-definedbegin and end times.

Door Mode ................ One per door, containing aSchedules seven-day week, plus special

days and two temporaryschedules. Entries for accesscontrol, locked or unlocked,times

DoorsNumber of doors ...... 2 entry only

1 entry/exitNumber of readers ... 1 or 2

ElevatorsNumber of Cabs ....... 2 cabs each with one entry

per 7920 readerStored Messages Capacity

Buffer ......................... 5,000 messages, nominalReader Details:

Readers SupportedI/DISCABA (TRACK 2) 115 & 85, 9 to 16 digit configurableWiegand 26 to 64 bit configurableWatermark Magnetics

Input Details:General

Number of inputs ....... 8Universal .................... DI or AI (0-5Vdc, 0-10Vdc,

0-20ma)

Supervision ................ 1K OHM, ¼ WATT, ± 5%resistor

Terminations ............. Removable screw terminalconnectors

Reader Ports ............. 2 ports, TTL Level signal,including 13 or 5 Vdc @50MA reader power

Door Sense Input ...... 2 dry contact closure(one per door)

Door Request to Exit 2 dry contact closures(one per door)

Tamper Switch ........... Dry contact closurePower Loss Alarm ..... Dry contact closure

Digital Output Details:General

Standard Quantity ...... 8Terminations ............. Removable screw terminal

connectorsType ........................... Form C relays, 1 A contact

rating @ 24Vac/dc. Relaysoperate in pairs, one pair perdoor. Door unlock timeruser-defined 0-255 seconds

LED Details:Sub-LAN TXSub-LAN RXLAN ReconfigStandby PowerNormal PowerEach Output On/Off

Listings:UL294 ........................ Access control system unitsUL864 UUKL ............. Smoke control and smoke

managementCE Marking ...................... Available

EN61000-4-2 ............. Electro static dischargeEN61000-4-3 ............. Radiated RFEN61000-4-4 ............. EFTEN61000-4-5 ............. Surge testedEN61000-4-6 ............. Conducted RFEN61000-4-8 ............. Magnetic fieldEN61000-4-11 ........... Power quality

2 (3)901210-03/02

S1

S2

D11 D10 D9

RX TX STATUS1 2 3 4 5 6 7 8 9 10 11 12

OFFTB1

TB2

A1A2A3A4B1B2B3B4

C1C2C3C4D1D2D3D4

A5A6A7A8B5B6B7B8

C5C6C7C8D5D6D7D8

TB3

TB4

EPROM

Reader Input 1

12

34

5678

12

34

5678

Reader Input 2

Door Switch

RequestTo Exit

+13V Reader Power(Not Used) Aux

Data/Data-1+5V Reader Power

Clk/Data-0LED (Red)

LED (Green)Ground

12

34

5678

1 2 3 1 2 3 4 5 6 7 8

SH

LD

CO

M-

CO

M+

TM

P–

TM

P+

BA

T–

BA

T+

E G

ND

PW

R–

PW

R+

Previo

us

Co

ntro

ller

Next

Co

ntro

ller

SECONDARY ALARM BYPASS

STRIKE POWERSUPPLY+ –

NOC

NC

24Vac

48VAPower

Transformer

4AH 12V Battery

Tamper

121110987654321

TB8

TB9

SH

LD

CO

M-

CO

M+

NOC

NC

+

TB1

TB2

TB3

TB4

TB5

TB6

TB8

TB9D8

D7

D6

D5

D4

D3

D2

D1

C1

C2

C3

C4

D1

D2

D3

D4

STATUS

8.00 "

9.31 "

8.64 "

8.11 "

7.00 "

7.00 "

S2

D11 D10 D9

RX TX

S1 OFF 1 2 3 4 5 6 7 8 9 10 1112

9.60"

9.00"

10.0"

EPROM

C5

C6

C7

C8

D5

D6

D7

D8

A1

A2

A3

A4

B1

B2

B3

B4

A5

A6

A7

A8

B5

B6

B7

B8

12345678

RS5

DPU 7920 Controller Card

3 (3)901210-03/02

TAC and TAC products are trademarks and/or registered trademarks of TAC AB. All other trademarksmentioned belong to their respective owners. Copyright © 2002 TAC AB. All rights reserved.

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7920-U8

PART NUMBERS

DIBA

SE8 8 2Door processing unit, single door entry/exit,no enclosure, no transformer, UL2947920

RDRDO

8 8 2Door processing unit, single door entry/exit,no enclosure, no transformer, UL294, CEmarked

7920-C

8 8 2Door processing unit, single door entry/exit, noenclosure, no transformer, UL294, UL864 UUKL

8 8 2Door processing unit, single door entry/exit, notassembled, enclosure, no transformer7921

8 8 2Door processing unit, single door entry/exit, notassembled, enclosure, transformer, tamperswitch kit, battery backup kit, power on light kit,UL294, UL864 UUKL

7921-U8

8 8 2Door processing unit, single door entry/exit, notassembled, enclosure, transformer79211

8 8 2Door processing unit, single door entry/exit,assembled, enclosure, transformer, tamperswitch kit, battery backup kit, power on light kit,UL294

79211U

8 8 2Door processing unit, single door entry/exit,assembled, enclosure, transformer 120V7922

8 8 2Door processing unit, single door entry/exit,assembled, enclosure, transformer 120V,tamper switch kit, battery backup kit, power onlight kit, UL294

7922U

8 8 2Door processing unit, single door entry/exit,assembled, enclosure, transformer 120V,tamper switch kit, battery backup kit, power onlight kit, UL294, UL864 UUKL

7922-U8

Noise suppressionVaristor kitKITVAR

COMMENT

1 x 4AH, 12VDC batteryBattery backup kitKITBAT12 x 4AH, 12VDC batteryDouble battery backup kitKITBAT2Switch, wiring, screwsCabinet tamper switch kitKITSW120/24VACPlug-in transformerPLUGINTX

14.25"x14.25"x3.5"Purpose-made enclosureENCL7920

120/24VAC 2.4A SecPanel mounting transformerXFMR6Download FOC7920 Installation guideTCON117

8 8 2Door processing unit, single door entry/exit,assembled, enclosure, transformer 240V7923