Table of Contents
Related Manuals for LCN LCN 7940-8770
Summary of Contents for LCN LCN 7940-8770
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Page 1: Installation Instructions
LC N ® 7940-8770 Presence Sensor Installation Instructions LC N ® Hardware Products 121 West Railroad Avenue Princeton, IL 61356-0100 1-800-526-2400 FAX: 800-248-1460 www.lcn.ingersollrand.com © 2006 Ingersoll-Rand Company Limited... -
Page 2: Technical Specifications
DESCRIPTION The LCN Presence Sensor (PN: 750182-00) is a self-monitored ready overhead-mounted diffused active infrared sensing device that provides detection for the triggering of automatic swing door safety functions. When used with LCN’s lockout devices, the sensor is programmed to allow two different fields of detection - one for detection when the door is in the fully closed position and the other for detection when the door is fully open. -
Page 3: Safety Precautions
SAFETY • Shut off all power going to the header before attempting any wiring procedures. PRECAUTIONS • Maintain a clean & safe environment when working in public areas. • Constantly be aware of pedestrian traffic around the door area. • Always stop pedestrian traffic through the doorway when performing testing that may result in unexpected reactions by the door. -
Page 4: Mechanical Installation
MECHANICAL NOTE: LCN recommends the use of a BodyMount P/N 761222-79 for most Presence Sensor applications. The INSTALLATION BodyMount is a 3” standoff that allows the Presence Sensor to be slightly distanced from the face of the closed door. This helps to prevent ghosting caused by slight door movement while closed, and also prevents ghosting when Door Mounted Safety Sensors are used (as the Door Mounted Safety Sensor extrusions at the top of the door are extremely close to the sensor while the door is closed). -
Page 5: Mechanical Adjustments
Once all installation, wiring and cabling procedures have been completed, mechanical adjustments can be made. MECHANICAL Please note that further adjustments may be required after powering and walk testing the detection field. ADJUSTMENTS Aside from placement on the header, the only mechanical adjustment that may be made to the sensor is the angle adjustment. - Page 6 DOUBLE EGREES: Perform the following set up using LCN’s remote control to reduce cross talk between duel egress applications. Refer to REDUCING the figure on page 2 to ensure the two Presence Sensors are installed with at least 40” of separation when measured CROSS TALK between the centerline of each sensor.
- Page 7 PROGRAMMING GUIDE – GENERAL FUNCTIONS REMOTE P/N 7940-461 Interface 1: LO-Linx 2: LO21 - Old Style (LO21, B, K, P, U) Unlock Inquire Lock To UNLOCK the sensor: Press the UNLOCK key once. Red LED flashes slowly. If flashing fast, see Note below.
- Page 8 PROGRAMMING GUIDE – PATTERN ADJUSTMENTS Sensitivity Door Open-Closed 0 (min) → 9 (max) (default 7 for door open, default 6 for door closed) Pattern Width Door Open or Closed 1: Wide (closed door) 2 : Middle (open door) 3 : Asymmetric Left Narrow 4 : Asymmetric Right Narrow 5 : Narrow Left 6 : Narrow Right...
- Page 9 MANUAL (NON-REMOTE) Without the LCN Remote Control, the Presence Sensor may be set up using the manual push buttons (see SET-UP diagram below) located under the right end cap. Only the sensitivity, relay mode, auto-learn time, pattern width, and pattern depth may be adjusted with the manual push buttons. To adjust the Presence Sensor, complete the following: To start the set-up process, press PB1 (for less than 2 seconds) The set-up function will be launched according to the current door position.
- Page 10 PRESENCE SENSOR WIDTH PATTERNS (1) Wide Pattern (4) Asymmetric Right Narrow (7) Asymmetric Left Wide PRESENCE Row 1 (spots 1 through 6), remain on, even during the closed door position SENSOR DEPTH PATTERNS (1) Deep NOTE: When the Presence Sensor is mounted at 7’, each block on the pattern charts shown above equates to a size of approximately 14”...
- Page 11 PRESENCE Row 1 (spots 1 through 6), are on during open door position and off during closed door position. SENSOR DEPTH PATTERNS - Cont. (4) Deep Without Row 1 TROUBLE- SHOOTING PROBLEM Presence Sensor will not set-up upon initial powering Door will not open once set- up has been completed.
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Page 12: Troubleshooting
TROUBLE- PROBLEM SHOOTING – Cont. Presence Sensor repeatedly re-learns the environment with each Presence Sensor not reacting to the remote control ACCESSORIES BodyMount P/N 761222-79 75.5255.02 XXXXXXXX 7940-8770 LCN PROBABLE CAUSE 1. Improper data from the lockout device 2. Data polarity at the Presence Sensor is incorrect 1.