1.0 Introduction

PXL-500 controllers can be used for proximity elevator control applications. When using a PXL-500 with an SB-593 you will be provided with two floor increments of elevator control at an economical price.

A single MS or Wiegand reader is mounted inside an elevator cab and uses a daisy-chain hard-wired connection to other PXL-500 controllers (up to 12 PXL-500 controllers to control floor access for up to 24 floors or 32 floors when using Wiegand controllers and a Wiegand Distribution Amplifier). Used with the Doors.NET software this can be a very cost-effective elevator control solution.

Note: You must check with local authorities when installing Elevator Control panels. Your elevator control application must meet all local and national safety codes. The Main or Lobby Floor cannot have access control applied – all people must be able to exit the elevator at all times on at least one common, ground-level access floor.

2.0 Important Considerations:

To ensure proper operation, the following considerations apply when using Doors.NET software and PXL Hardware for elevator control:

• One reader is the elevator cab controls access for all floors. This reader is attached to all controllers which are assigned a floor (through a daisy-chain connection). This wiring scheme results in the one reader being responsible for access requests for all floors.

• The reader's read range is reduced, possibly up to 25%, due to the reader signal being shared between multiple controller reader ports.

• To ensure the Wiegand reader signal reaches all controllers with good signal strength, a Wiegand Distribution Amplifier (P/N 04197-001) is required.
• Card presentation to the reader is critical. To ensure that all controllers have the opportunity to respond to a presented card, the card must be presented to the reader for a greater length of time compared to conventional access control using MS readers. Depending on the cable run and number of PXL controllers being used you may need to present the card for up to 2 seconds. If the card is not presented for long enough, controllers that have not recognized the card will not allow access to the floors they control.
• The reader’s LED and beeper are used to indicate correct card presentation only, and does not indicate if all the PXL/LC controllers have recognized the card or if access has been granted or denied (as done by the PXL control and MS or Wiegand readers in conventional access control).

3.0 Floor Control Relay

The relay on the PXL and the SB-593 have a contact rating of 24 VDC @ 1 Amp.

Note: When connecting to elevator control systems and the floor selection buttons, please verify the elevator system voltages. Most elevator systems operate on DC or AC voltages higher than the 24 VDC @ 1 Amp rating at which Keri Systems’ elevator controllers are rated.

Each installation should use isolation relays.

• Keri Systems recommends establishing an interconnection point at which the access control system and elevator control system connect, and to which both the access control company and the elevator company have access. This assists in making the connections between the systems and in allowing for independent system troubleshooting.
• If the system voltages are different (or if you wish to fully protect the access control system from transient voltage spikes), these connections should be made via isolation relays or relay control boards.
• If the system voltages are the same and both systems are fully protected, or if the system connections are made between dry relay contacts, you may only need to use a terminal strip for these connections.
• The Floor Control Relay is connected to the floor controls at the elevator panel. If a controller has an SB-593 Satellite Board attached to control two floors, connect the lower floor to the A-Floor Control Relay and connect the higher floor to the B-Floor Control Relay. Make the floor control relay connections per the information in the Table below.

4.0 Floor Control Relay Connections

Notes:

• Please consult your local building codes for proper installation requirements and check with local permit departments to verify compliance. Elevator systems have Life Safety requirements and may also require a connection to a fire control system. Under such conditions, plenum cable may be required.
• On long power cable runs, the cable resistance causes a drop in voltage at the end of the cable run. Be sure your power supply provides 12 VDC at the end of the cable run.
• The Floor Control Relay may require a heavier gauge of wire depending upon the current demands of the elevator panel and the length of the wiring run.
  
  

5.0 RS-485 Controller Network

All of the controllers in the elevator network communicate through an RS-485 serial communication network. Per the RS-485 industry specification, this network must be daisy-chained, with a total network cable length of no more than 16,000 feet. Make the RS-485 network connections per the Table and drawing below.

Note: Connect shield ground at the Primary controller ONLY. The LC-500P controller automatically connects earth ground to the shield at one point on the network. This single connection minimizes the effects of ground loops that can affect controller performance.

6.0 Reader Daisy-Chain (MS-Readers)

One MS-Series proximity reader is shared by all PXL elevator control panels in an elevator control application. The main reader connections are made to a primary PXL controller /elevator panel (the controller addressed as #1). All other reader connections to the remaining PXL Secondary panels are made per the following rules:

• The reader antenna line must be daisy-chained to all other elevator panel antenna inputs – Pin 1 of TB-5 and TB-6.
• The reader ground line must be daisy-chained to all other elevator panel antenna grounds to provide a standard ground reference for all panels – Pin 4 of TB-5 and TB-6 on the LC-502P/LC-508P panels.
• The reader’s positive power line must be connected to the Primary elevator panel ONLY (Pin 3 of TB-5 on the Primary LC-502P/LC-508P panel).

Make the reader connections per the following diagram:

7.0 Wiegand Reader/Amplifier Daisy-Chain

When using PXL500W or LC-500W controllers, one Wiegand reader is shared by all elevator control panels in an elevator control application. The Wiegand reader connections are made to the Primary LC-502W elevator panel, through a Wiegand Distribution Amplifier. Because Wiegand usually has less interference due to using Data 0 and Data 1 (as opposed to one antenna) it is the preferred solution for PXL elevator control and in access control situations where there is high levels of interference.

Make the Wiegand reader to Distribution Amplifier connections as per the following table.

Make the Distribution Amplifier to Primary elevator panel connections per the information below.

All other reader connections to the remaining PXL-500W or LC-502W panels are made per the following rules.

• The reader data lines must be daisy-chained from the Primary elevator panel to all other elevator panel data inputs – Data 0 to Pin 1 of TB-5 and TB-6 and Data 1 to Pin 7 of TB-5 and TB-6 on the LC-502W panels.

• The reader ground line must be daisy-chained from the Primary elevator panel to all other elevator panel antenna grounds to provide a standard ground reference for all panels – Pin 4 of TB-5 and TB-6 on the LC-502W panels.

Make the data line daisy-chain connections per the following table and diagram.

8.0 Earth Ground and Power

The PXL-500 and SB-593 requires 12 VDC power at 750 mA. You must make a quality earth ground connection to the controller prior to connecting the DC power lines. The earth ground provides protection for the controller and ensures the best possible operating conditions. Possible sources for earth ground are a ground rod, a cold water pipe, a steel building frame, the electrical system ground at the breaker/fuse box, or the telephone system ground.

9.0 Auto-Configuring The Controllers

When connecting to a PXL network the first thing you need to do is get the Primary PXL controller online the Secondary controllers are added to the system using Auto Configuration. Refer to Basic PXL Configuration for more information about adding PXL controllers.

10.0 Naming the Floors

Once the PXL controllers are listed in the hardware tree you can then name the floors. The reader names effectively become the floor names when using PXL controllers for elevator control. When the controller receives a valid card signal through its reader port it will automatically activate its associated relay.

TB5 reader automatically controls the PXL relay on TB3 and TB6 reader signal controls

the SB-593 relay on TB7.

Expand the controllers in the hardware tree so you can name the readers. To rename a reader, highlight it and then change its description within the reader properties on the right. The two readers on controller 1 will be named floors 1 and 2, for example, the readers on controller 2 will become floors 3 and 4, and so your hardware tree will look similar to that shown below.

11.0 Setting Up Floor Access

Setting up access to floors in Doors.NET is identical to the setting up of access groups for typical access control.

• From the Home tab click Access Groups
• Click the Add button to add a new Elevator access group
• Rename the default label
• Highlight the new access group
• Select the floors that will be part of this group
• Select a time schedule in which access will be granted (to cardholders that are assigned this group)
• When all three elements have been selected you can click the Assign button
• The access group information will then be saved to the database

12.0 Assigning Floor Access Rights

When using PXL controllers you can only assign 1 access group to each cardholder. Access rights are assigned in the same way as with conventional access control.

• From the Home tab click Cardholders
• Select an existing cardholder from the list
• Click the Access Rights tab and select the appropriate elevator access group for the cardholder

• Save the cardholder record and the access rights settings will automatically be sent out to the PXL controller network.

13.0 Gaining Access to Floors

The cardholder holds their card up to the reader in the elevator cab. For typical elevator control applications the buttons to which the floors they can access will then illuminate allowing the cardholder to select which floor they wish to access.

Because elevator control using the PXL controllers is a basic implementation of elevator control it is not possible to run reports on which floor the cardholder has gone to. This is known a ‘Elevator Control With Floor Select’ and is only available when using NXT Mercury Powered controllers and having the appropriate amount of programmable inputs available to set up as elevator feedback inputs.

Note: In addition; because all PXL controllers will receive the access signal at the same time there will be multiple Access Granted or Access Denied events generated in Live Events upon each card presentation, however, these messages can be supressed, if desired, by using filters.