RR2552 Spread Spectrum Repeater

General Information

Warning: Do not use this product in any safety related applications where human life may be affected.

The RR2552B repeater utilizes 900 MHz spread spectrum technology to enhance the range of ACI wireless systems. It is designed for easy installation and extends the reach of wireless sensors. The RR2552B features an 8-position dipswitch for user-selectable addressing, allowing it to match the Network ID of the receiver/transceiver without requiring programming. It operates on 24 VAC and includes two Duracell DL123 3V lithium batteries for temporary power during positioning. Without a repeater, systems operate as point-to-point, with direct communication between sensor and transceiver. Adding an RR2552B repeater improves sensor distance and reliability.

Mounting Instructions

Precautions

• To maintain high performance, avoid installing sensors, repeaters, or receivers in: metal enclosures/panels, elevator shafts/banks, areas directly in front of large trees or large bodies of water.
• Mount the unit in a wall 1 inch below the ceiling, not above a false ceiling.
• Use the battery option to determine the optimal mounting location before wiring.
• Do not connect more than two RR2552B repeaters in series.
• A maximum of three (3) repeaters should be installed per wireless system.
• Contact ACI Tech Support for further assistance.

Setting Repeatable Network ID

The RM2432 or MOD9200 systems are assigned a network ID via configuration software, defaulting to ID 1. For multiple ACI wireless systems in a building, each receiver/transceiver requires a unique network ID set through the software. When adding a repeater, its binary dip switches must be configured to match the system's network ID. If only one ACI wireless system is in use, the network ID is typically set to the default of 1. With all dip switches in the OFF position on the repeater, the default address is binary "1".

Table 1: Repeatable Network ID Switch Setting

Example: To set the Network ID to "2", depress the "+1" switch to "ON" to add "1" to the Base ID of "1".

Example: To set the Network ID to "3", set the "+1" switch to "OFF", and the "+2" switch to "ON" to add "2" to the Base ID of "1", equaling "3". Refer to Table 1 for switch positions.

Determining Repeater Location

To determine the optimal location, remove the battery from a sensor not currently connected to the receiver. Press its yellow transmit button to dissipate any residual charge. Leave the sensor in its intended space.

Open the repeater and set its dip switches to match the receiver's network ID. If the system is the only one in the building, the network ID is likely the default setting of 1.

Install batteries in the repeater's battery clips, ensuring correct polarity. Keep the J1 jumper in the Vin position.

Position the repeater approximately halfway between the transceiver and the sensor(s) that are experiencing connection issues.

Figure 1: Wireless Building Diagram Description

This diagram illustrates a typical wireless communication setup. It shows a 'SENSOR' communicating wirelessly with a 'REPEATER', which in turn communicates with a 'RECEIVER'. The repeater and receiver are shown positioned near the ceiling, with the sensor located further away. This visual represents how a repeater extends the communication range between a sensor and a receiver.

The repeater's antenna board features three LEDs: Active, Data, and Link. The Active LED flashes once per second, indicating that the unit is powered. The Data and Link LEDs provide visual feedback on wireless transmissions.

To test connectivity, hold the repeater high and move the J1 jumper to the 'Battery' position. The Active LED should flash once per second. The Data LED will flash 4-5 times per second as it searches for the receiver. Upon successful linking with the receiver, the Data LED will remain solid for 3 seconds before turning off. Monitor the Data LED for a few minutes to confirm a stable connection.

If the repeater fails to link, the Data LED will continue flashing. In this scenario, remove the J1 jumper, move the repeater closer to the receiver, and attempt reconnection by placing the J1 jumper back in the battery position.

Once the repeater is linked, leave it in its current location. Proceed to the location of the non-connected sensor(s) and insert the battery. The sensor's Link LED will flash 8-10 times per second as it searches for the repeater. Upon successful connection, the sensor's Link LED will flash once every 75 seconds.

Sensor linking status can be verified by observing the repeater's Data and Link LEDs. Both LEDs will flash each time a sensor transmits data through the repeater.

The battery-powered mode is intended for site surveys or temporary positioning. For long-term use, the unit must be powered by 24 VAC. The RR2552B can operate for approximately 6 hours on battery power.

Wiring Instructions

Wiring Precautions

• Always remove power before performing any wiring. Never connect or disconnect wiring while power is applied.
• The RR2552 unit is full-wave rectified.
• It is recommended to use an isolated, UL-listed Class 2 transformer for powering the unit with 24 VAC. Incorrect polarity when sharing transformers can damage devices powered by the same transformer.

Note: Observe polarity when connecting analog outputs to controller inputs.

Connect 24VAC 60Hz power to the TB1 terminals using 16-26 AWG twisted pair wire. Verify all connections before applying power.

Figure 2: Enclosure Dimensions Description

Standard Enclosure

The standard enclosure dimensions are approximately 6.75 inches (171.5mm) in width, 4.72 inches (119.89mm) in height, and 6.12 inches (155.5mm) in depth (side view). Key features visible on the top surface include the Network ID Selector, TB1 terminal block, Battery terminals, Input Voltage Selection Jumper, and Antenna. Indicator LEDs (Link, Data, Active) are also present.

NEMA 4X Enclosure

The NEMA 4X enclosure dimensions are approximately 7.285 inches (185mm) in width, 4.76 inches (121mm) in height, and 6.73 inches (171mm) in depth (side view). It features mounting holes (0.18 inch diameter) and similar internal components as the standard enclosure, including the Network ID Selector, TB1 terminal block, Battery terminals, Input Voltage Selection Jumper, and Antenna. Indicator LEDs (Link, Data, Active) are also visible.

Troubleshooting

Data LED is flashing on the antenna board:

• Confirm the repeater's dip switches are set to match the receiver's Network ID.
• The repeater may be too far from the receiver. Move the repeater closer or rotate it 90 degrees.
• Ensure the repeater is mounted 1 foot below the ceiling, not above a false ceiling.

Active LED is not flashing:

• Verify the unit is powered with 24 VAC, not 24 VDC.
• The repeater might be in battery mode with depleted batteries.
• Ensure the J1 jumper is set to the 24V mode.

Product Specifications

Warranty

The ACI Wireless Series is covered by ACI's Two (2) Year Limited Warranty. Full warranty details are available in the ACI Sensors & Transmitters Catalog or on the ACI website: www.workaci.com.

W.E.E.E. Directive

At the end of its useful life, the product and its packaging should be disposed of at a suitable recycling center. Do not dispose of with household waste or incinerate.

[recycling symbol] [RoHS 2 logo]