CI-1 and CI-8 Communications Interface 5452 Betsy Ross Drive Santa Clara, CA 95054-1184 (408) 727-5170 FAX (408) 727-6707 P/N 66104700001 Rev.
r y h H © 1997 Westinghouse Security Electronics. All rights reserved. DigiReader, NexKey, QuadraKey, DuraKey, NexSentry and NexStar are trademarks of Westinghouse Security Electronics. Printed in the United States of America.
LIMITED WARRANTY WSE warrants to the original user the Equipment manufactured by WSE as described herein (the Equipment) to be free from defects in material and workmanship for a period of one year from the date of purchase by such user or fifteen (15) months from the date of shipment from the factory, whichever is sooner, provided: I WSE has been notified within such period by return of any alleged defective equipment, free and clear of any liens and encumbrances to WSE or its authorized Dealer at the add
FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT This equipment has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Contents Limited Warranty ....................................................................................................... iii Federal Communications Commission RFI Statement ............................................. iv Section 1: CI-1 Single Communications Interface Description ............................................................................................................. 1-1 Power .....................................................................................................
SECTION 1: CI-1 SINGLE COMMUNICATIONS INTERFACE DESCRIPTION The CI-1 can be used to connect up to four ACUs to a single host computer and to extend the distance between an ACU and host computer to 2000 ft (610 m) A block diagram of a typical CI1 installation is shown in Figure 1-1. The CI-1 is designed to operate only with WSE access control equipment, and only as described herein. For other applications, contact WSE Customer Support.
CI-1 and CI-8 Communications Interface Figure 1-2: CI-1 Communications Interface Housing Dimensions Operating Temperature Humidity Fuses RS-232 DTE Port 32° 120°F (0° 50°C) 0 to 95% non-condensing Two .5-amp fuses for battery input, F1 and F2. 25-pin RS-232 connection to host computer system. Power Input Connection to power supply or AC transformer. Terminals labeled AUX AC, CT and AC; 18 VAC, 80 mA nominal.
CI-1 Installation and Operation POWER The CI-1 requires a power supply which can provide 18VAC, 80mA, nominal. The SE 3018S Power Module, SE 3718SU Uninterruptible Power Supply or an AC transformer may be used. Connections are shown in Figure 1-3. Figure 1-3: Primary Power Connections If the SE 3018S Power Module is to be used, battery backup power is suggested. Two 12V batteries rated for 2 to 6 amp-hours are recommended.
CI-1 and CI-8 Communications Interface Figure 1-4: Backup Battery Connection NOTE: The CI-1 does not charge the two 12VDC batteries; use an external battery charger. The charge level must be checked periodically to assure proper power levels. Follow the below procedure to connect batteries to the CI-1. Connecting the batteries incorrectly will blow one or both fuses on the CI-1. 1.
CI-1 Installation and Operation Figure 1-5: CI-1 to Host System Connection The following general rules apply to all communication cables: 1. Plastic cable clamps and tie-wraps are acceptable. Staples must never be used to secure communication cables. 2. Communication cables from the CI-1 ports may be bundled together and may share a common conduit run; however, bundling or sharing conduit runs with cables of other electrical or electronic devices must be avoided.
CI-1 and CI-8 Communications Interface Figure 1-7: CI-1 to Multiple ACUs NOTE: If the 20mA loop includes SE 818 or NexSentry ACUs, each must be powered on for any communication with the host. Communication is not lost when an SE 808 is powered off. MOUNTING The CI-1 should be installed in an electrical equipment cabinet such as the NEMA Type 1 panel enclosure. Often, it is convenient to mount the CI-1 in the same cabinet as the ACUs and power module.
CI-1 Installation and Operation 3. Adequate ventilation to remain within the operating temperature and humidity specifications. Careful site selection is essential prior to installation. Ensure that your site meets all the following requirements: 1. Within 2000 ft of each ACU (distance measured in cable length). 2. Within 25 ft of the RS-232 host interface. 3. A minimum of 6 ft (2 m) from high voltage or high power equipment. 4. A minimum of 3 ft (1 m) from telephone cabling or equipment. 5.
CI-1 and CI-8 Communications Interface LOOPBACK TEST Using a known good cable between the host and the CI-1, jumper TX+ to RX-. With the host operating in the terminal mode, type ABC. The character string ABC should loop back and be displayed on the screen if the CI-1 is operating correctly. If this test fails, contact WSE Customer Support. POWER SUPPLY AND BATTERY Table 1-1 lists symptoms of power supply or battery problems and suggests diagnostic actions.
CI-8 Installation and Operation SECTION 2: CI-8 MULTIPLE COMMUNICATIONS INTERFACE DESCRIPTION The CI-8 is an RS-232C data broadcast box which can be used to increase the number of ACUs connected to a single host computer and to extend the distance between an ACU and host computer. The CI-8 is data transparent and can operate at any baud rate up to 9600. When ACU connection to the CI-8 is through the RS-232 ports, a maximum of eight ACUs may be used.
CI-1 and CI-8 Communications Interface The CI-8 is designed to operate only with WSE access control equipment, and only as described herein. For other applications, contact WSE Customer Support. CI-8 features and specifications are listed below. Housing Dimensions Operating Temperature Humidity Fuses 32° 120°F (0° 50°C). 0 to 95% non-condensing. Two 1-amp fuses for battery input, F1 and F2. Primary RS-232C DTE Port 25-pin RS-232 connection to host computer system. DB25 connector.
CI-8 Installation and Operation Figure 2-2: CI-8 Unit P/N 66104700001 Rev.
CI-1 and CI-8 Communications Interface MOUNTING Double-sided foam tape is provided with the CI-8. When applied to the back of the unit, the tape permits mounting on almost any surface. The unit should be installed in an electrical equipment cabinet, such as the NEMA Type 1 Panel Enclosure, which is designed to house electrical and electronic controls that do not require an oil- or dust-tight atmosphere. Is may be convenient to mount the CI-8 in the same cabinet as the ACUs. The cabinet should provide: 1.
CI-8 Installation and Operation Figure 2-3: Power Connections Battery input fuses, F1 and F2, and should be checked periodically. Replace bad fuses with 1amp fuses only. The CI-8 does not charge the batteries; an external battery charger must be used and the charge level checked periodically. Failure to follow the battery connection instructions below can result in a blown fuse. 1.
CI-1 and CI-8 Communications Interface COMMUNICATIONS INSTALLATION The following general rules apply to all communication cables, 20mA loop and RS-232. 1. Plastic cable clamps and tie-wraps are acceptable. Staples must never be used to secure communication cables. 2. Communication cables from two or more CI-8 ports may be bundled together and may share a common conduit run; however, bundling or sharing conduit runs with cables of other electrical or electronic devices must be avoided.
CI-8 Installation and Operation Figure 2-6: Multiple ACUs on a CI-8 20mA Port All the 20mA Loop switches on the CI-8 must be set appropriately for correct operation. Set to Normal when one or more ACUs is connected to a port. Set a switch to Shunted if no ACU is connected to the corresponding 20mA port. See Figure 2-7. Figure 2-7: 20mA Loop Enable Switches P/N 66104700001 Rev.
CI-1 and CI-8 Communications Interface CI-8 RS-232C TO ACU CONNECTION A null modem cable is used to connect the CI-8 to an ACU using RS-232C ports. Wires in the cable are 22-gauge, stranded core. The maximum distance between an ACU and the CI-8 is 25 ft (8 m). Figure 2-8 shows the minimum wire connections required between the CI-8 and either a 25-pin or 9-pin ACU host port. The AC power to all RS-232C devices must have a common ground to prevent ground potential differences.
CI-8 Installation and Operation TROUBLESHOOTING This section provides troubleshooting procedures for the CI-8 If there is poor or no communication between the host system and one or more ACUs, do the following: 1. Check the 20mA Loop switches. Set a switch to Normal if an ACU is connected to the corresponding 20mA port. Set toShuntedif there is no ACU connected to the corresponding 20mA port. 2. Check that the correct wire type has been used for the 20mA loop connections.
CI-1 and CI-8 Communications Interface Table 2-1: CI-8 Troubleshooting Symptom Poor or no communication. Action Measure the voltage between the CT and AC terminals on the CI-8. If it is not between 16 and 20 V, replace the power supply. (The 3708 provides 400hz, square wave power which may not be correctly read by some voltmeters.) Disconnect the ACU using 20 mA port 1. Measure the voltage between TX+ and TX- on port 1 of the CI-8. If it is not 24 VDC, go to step 6 below; if it is 24 VDC, go to step 1.
