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View in: "Building Automation Knowledge Base" | Community

1444 Posts | First Used: 2018-09-06

Building Automation Knowledge Base

Issue Can I share a 24 VAC Transformer with a 7798 and a 7910 or 7920 DPU? Environment 7798 7910 DPU 7920 DPU Cause The 7798 is a half wave DC board and the DPUs are full wave boards. The grounding is different and this will cause power problems that will destroy the 7798. Resolution You will burn up the 7798 board if you put it on the same transformer as a 7910 or 7920 DPU.

Issue OSTART and OSTOP not working on a temperature control extension Environment I/NET Resident I/O Temperature Control Extension Cause Optimal start requires the space temperature to meet the cooling/heating target temperature sometime after the optimized start time. Resolution Check that the space temperature has met the cooling/heating target temperature sometime after the optimized start time in order for the OSTART to work properly.

Issue How does a site set up a fan start with setup and setback temperatures? Environment I/NET Site Cause How does a site set up a fan start with setup and setback temperatures? Resolution The site can set up a temperature control extension. Then only populate the setup and setback temperatures. These are the only temperatures you put differentials on. The rest of the temperatures leave at the default values.

Issue Deleting doors in the access control editor Environment I/NET Site with Access Control Cause Deleting doors in the access control editor Resolution When deleting a door from a 7791 DPI, 7793 MCI or a 7798 I/Site LAN, make sure to delete the door Parameters before deleting the door (DO) point. Deleting the door (DO) point without previously deleting the door Parameters may cause unpredictable system performance. If the point has already been deleted first, the best way is to: Re-add the point again Save it in the NetCon Follow the correct sequence. Then it will work fine.

Issue Second door reader (09 Door) does not work on 7920 controller Environment 7920 DPU Cause If you have defined one door in a DPU-7920, and the door's exit reader parameter is set to anything besides NO, then the second reader port automatically becomes the exit reader. Resolution If you have defined two doors in a DPU 7920, neither door can have an exit reader defined. Set the door's exit reader parameter to NO.

Issue Does anti-passback (APB) affect both the entry reader and the exit reader? Environment I/NET Cause I/NET denies access due to anti-passback on entry readers only for safety reasons. Resolution I/NET denies access due to anti-passback on entry readers only. A key/card is never denied access on an exit reader. This is for safety purposes; you should always be able to exit a building.

Issue Activating the release to exit button failed to open the door Environment Access/Door Editor Cause Two definitions in the Access/Door Editor make the release button fail to open the door: door release and door strike. Resolution Define the door release switch in the Access\Door Editor. This switch can either be Normally Open NO, or Normally Closed NC Define the door strike in the access\door editor as BOTH

Issue Ways to force an immediate dial on an I/NET DPU Dial type system: Environment I/NET DPU AD/AA Dial system Cause Need for force a modem to dial a site Resolution Performing the following access control changes will cause the system to immediately dial affective remote sites, regardless of the DPU Dial type settings. A) Changing an individual or group record type to “Temporary” B) Modifying an individual or group “Temporary Schedule”

Issue Can I add a DPU on an existing 7792 Sublan? Environment 7910 DPU 7920 DPU 7792 SubLAN Cause The 7792 are for MRs and ASCs only. Resolution A DPU cannot be added on an existing 7792 Sublan. To correct this: Do a Memory Clear on the controller with a HHC. With the HHC, change the controller to a 7793. This will allow you to have MRs, ASCs And DPUs on the same SubLAN.

Issue Should we recommend Message tag bindings be performed after the commissioning of the device? Environment I/NET Site Cause Should we recommend Message tag bindings be performed after the commissioning of the device? Resolution No, this should not be necessary. It may be preferable, however, for a dialed network as the 901 device must be added to the network when connected to the network.

Issue Can I have more than one version of I/Net 2000 on the same hard drive? Environment I/NET 2000 Cause Can I have more than one version of I/Net 2000 on the same hard drive? Resolution Yes, although we do not recommend that you do this, it is possible. You will need to first partition your hard drive. After you have created two partitions, you will need to install a version of windows on each partition. One of the partitions will have to be WinNT with NT being installed first. This way you can have I/Net 1.20 on C:\ and I/Net 2.10 on D:\. The two versions of I/Net 200 cannot share a Windows registry.

Issue What is the minimum recommended requirements for a host workstation with I/Net 2000 on it? Environment I/NET 2000 Site Cause What is the minimum recommended requirements for a host workstation with I/Net 2000 on it? Resolution Pentium Class Processor 200 MHz or greater 32 MB of RAM 200 MB of Hard drive space CD-ROM drive Video Display of 800 x 600 Windows 95, 98 or NT. Windows 2000 or ME will not work with I/Net 2000 Mouse. If you plan on using an Ethernet LAN, the following will be needed. TCP/IP capabilities Static IP Address IP Mask Gateway IP address

Building Automation Knowledge Base

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Related Forums

Intelligent Devices Forum

Do not share a 24vac transformer between a 7798 and a 7910 or 7920 DPU

OSTART and OSTOP not working on a temperature control extension

How does a site set up a fan start with setup and setback temperatures?

I can not see the access controls editor in the I/NET system. What did I do wrong?

Deleting doors in the access control editor

Second door reader (09 Door) does not work on 7920 controller

Does anti-passback (APB) affect both the entry reader and the exit reader?

How to number a zone for an exterior door for an anti-passback (APB) system

Activating the release to exit button failed to open the door

Can I use both door readers on a DPU for two elevators?

Which time schedule has the highest override control?

Can I use a Master-Slave time schedule in an access control system?

Ways to force an immediate dial on an I/NET DPU Dial type system:

Can a DPU be added to an existing 7792 SubLAN?

Should we recommend Message tag bindings be performed after the commissioning of the device?

I/NET phone entries location

What is the function of an IP address?

What is the function of a subnet masking

Can I have more than one version of I/Net 2000 on the same hard drive?

What is the minimum recommended requirements for a host workstation with I/Net 2000 on it?

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