K594W/K594C PIR Occupancy Sensor Product Guide
Overview
The K594 passive infrared (PIR) motion detector adds occupancy sensing capability to INNCOM integrated guestroom control systems.
Available in either a wall (K594W) or ceiling (K594C) mount, the K594 is used in conjunction with a door contact device, a room controller, and a
communication network to determine occupancy in the guestroom. Detecting occupancy leads to better management of energy usage and security activities, enhancing the overall operating efficiency of the hotel.
Features
• Sensitivity adjustment • Wide angle dispersion • Easy installation • No maintenance
Both the K594W and the K594C units are low-voltage-wired to an INNCOM Smart Guestroom Controller. Both meet INNCOM system requirements for sensitivity, area coverage, appearance, and dependability.
The benefits to the hotel are many. Energy saving is paramount, but other benefits include the extension of the life of equipment involved in heating, ventilation, and air conditioning. Occupancy sensing also results in improved overall operational efficiency and the enhancement of guest satisfaction.
The K594 microprocessor-controlled PIR device detects motion in a guestroom and reports it to the room controller. The room controller combines this data with other inputs (such as an entry door switch or an electronic door lock) to determine occupancy in the guestroom. This information can then be used for energy control decisions. The occupancy information is also provided to Housekeeping by means of a terminal or the corridor doorbell display so that Housekeeping staff can efficiently determine when to provide service. Occupancy information can be used for automatic lighting control; when guests enter the room, occupancy is detected and lights are activated. It also provides an audit trail for Security.
(Note: the K594 units used by INNCOM are primarily manufactured for use as security detection devices rather than as occupancy sensors and therefore may not provide the coverage expected, especially where IR-blocking furniture or walls are present. Pairing the K594 remote sensor with other occupancy sensor such as the integral PIR available with the e4 series thermostats may provide a more complete coverage.)
K594W—Application
The K594W (Figure 2) is designed for easy installation, free of vertical adjustment. It features a combination of Fresnel and cylindrical lens elements with high-detection sensitivity beginning at 0.5 meter away from the detector up to a distance of 12 meters (40 ft.). The advanced True Motion Recognition™ algorithm (patented) allows the K594W to distinguish between the true motion of an occupant and other disturbances that might provoke false readings.
(Reprinted from the Visonic Installation Instructions)
K594W—Installation Requirements
The K594W is connected to a four-conductor, low voltage cable and installed in minutes with simple tools. The cable is run to the guestroom controller. Location of the K594W is determined by the individual guestroom design. Ideally, the unit is positioned to cover both the entry door and the bed areas of the guestroom. In general, mount the detector
• Away from openings (doors, windows) to outside environments • Away from drafts of hot or cold air
• To cover the most expected pathway of a room occupant
• To avoid aiming at areas of rapid temperature fluctuation (e.g., ventilating ducts, exterior windows, refrigerator grills, etc.)
Figures 3 and 4 (below) show the manufacturer’s recommended positioning mounting for the K594W.
Note: INNCOM’s real-world experience with the K594W indicates some additional considerations for
installation and placement:
• The K594W spread ranges from a direction horizontally extending out from the PIR face to a 60˚ down angle; keep that in mind when the K594W is mounted in a corner of the room at the ceiling
• The K594W has a 90˚ azimuth range, so it is best located in the corner of the room, not in the middle of a wall. The INNCOM e528 has a 170˚ azimuth range (standard built-in), and 150˚ for the flat PIR in the e528 or e527
Figure 3—Installing the K594W
(Reprinted from the Visonic Installation Instructions)
K594C—Application
The K594C (Figure 5) provides a conical detection pattern of about 36 feet (11m) maximum. It employs a low noise dual element pyro sensor. The alternate polarity signal processor provides high radio interference and power surge noise rejection. The MCU functionality maximizes security and false alarm immunity.
K594C—Installation Requirements
The K594C should be ceiling mounted no more than 12 feet (3.6m) above the floor; refer to a site-specific cabling diagram. The same location restrictions noted for the K594W above apply to the K594C. Note that the printed circuit board (PCB) needs to be removed from the unit before mounting the base (see Figure 5 above for the location of the PCB and base mounting screws). For wiring to the connection block and jumper settings, see the K594C datasheet from AEI Protect-On Systems (located in the INNCOM Document Library).
Note: As with the K594W, INNCOM’s real-world experience differs somewhat from the manufacturer’s data:
• The detection pattern is more oval than circular
• Most hotel room ceilings are lower than the 3.6m noted in the manufacturer’s datasheet. The detection radius is closer to 2 to 4m (approx 6.5 to 13 feet)
See Figure 6 below for the detection pattern in a real-world walk test.
Figure 5—K594C Mounting Diagram and Detection Pattern (Reprinted from the AEI Protect-On Installation Instructions)
Note that neither of the K594C sensor locations shown above provide coverage of the critical spaces in this particular room –the bed and desk/seating area. Care should be taken in locating the sensor to maximize coverage of key occupant areas while also meeting interior design criteria.
For larger spaces or for irregular shaped rooms, multiple sensors should be considered. Figure 6—K594C Sensor Coverage – Based on Walk Test
Technical Specifications
K594W K594C
Input voltage: 9 to 16 VDC 8 to 16VDC (12VDC nominal)
Current drain: Max. 9 mA @ 12 VDC 15ma @ 12 VDC
Lens data:
No. of Fresnel beams No. of curtain beams Max. coverage
27 9 + 5
12 × 12 m (40 × 40 ft.)/90 degrees 11 × 11m
Alarm output:
Solid state relay, N.C., up to 100 mA/30 V, ~30 Ω internal resistance. Circuit opens for 2-3 seconds upon alarm.
N.C. or N.O. relay contact with 10 Ohm in-line resistor. Contact rating: 28VDC, 0.1A
Alarm indication: LED lights for 2-3 seconds. Event counter: Selectable, 1 or 2 motion events. Tamper contacts: Normally closed, 50 mA resistive/30 VDC.
Operating temperature: -10 °C to 50 °C (14 °F to 122 °F) -10 °C to 55 °C (14 °F to 131 °F) Storage temperature: -20 °C to 60 °C (-4 °F to 140 °F)
RFI protection: Greater than 20 V/m (20MHz to 1000 MHz)
Ordering Specifications
The INNCOM part numbers are• 04-1067.V for the wall-mounted model • 04-1068 for the ceiling-mounted model
Document Revision History
REVISION DATE ISSUED REASON FOR CHANGE
v1.0 21-Oct-2010 First Issue
v1.1 04-Nov-2010 Revised with comments on coverage v1.2 19-Mar-2014 Updated to Honeywell format