Keri Systems IRP-1 User Manual

IRP-1: Isolation Relay Package

1.0 Purpose

The PXL-250 Tiger Controller, SB-293 Satellite Board, PXL-100 Smart Entry Controller, and SM­2000 IntelliProx Single Door Controller are designed with built-in voltage transient suppression.
For most applications, this build-in protection is more than adequate - additional protection is not
required. However, there are two applications that can require additional protection.

1. magnetic locking devices or dry-contact devices without built-in suppression (typically older
models)

2. magnetic locking devices that draw large amounts of current (typically older models or
defective devices)

For these applications, the IRP-1 should be used to isolate the PXL-250, SB-293, PXL-100, or SM­2000 from the transients these magnetic locking devices can generate, ensuring reliable operation of
the controller.

2.0 Contents

The IRP-1 is made up of the following items.

• one printed circuit board containing an isolation relay, diode, and connector strip

• one transient suppression device (1.5KE39C nonpolarized transorb)

• double sticky-sided foam tape (for mounting)

3.0 Specifications

The IRP-1's relay is rated as follows.

7 Amps max. @ 30 VDC
12 Amps max. @ 125 VAC

4.0 Application

There are two primary applications for the IRP-1. It can be used with an external locking device
(such as a magnetic lock or door strike) or with a dry-contact device (such as a switch or relay
controlling a motor for a parking barrier or power gate). The wiring diagram is different for these
two applications. Figures 1, 3, and 5 are wiring diagrams for adding an IRP-1 to an external locking
device. Figures 2, 4, and 6 are wiring diagrams for adding an IRP-1 to a dry-contact device.

Install the IRP-1 as shown in Figures 1 through 6 to meet your application's requirements. If the
application uses either 12 VDC or 24 VDC, install the supplied transorb as near to the external
locking device or dry-contact device as possible. Do not install the transorb if the device is being
powered with greater than 30 VDC.

IRP-1Quick Start Guide

2305 Bering Drive 01833-001 Rev. G
San Jose, CA 95131 USA
[phone] [phone] FAX [phone]
Web: www.kerisys.com E-mail: [e-mail] Page 1 of 4

IRP-1: Isolation Relay Package

Quick Start GuideIRP-1

Figure 1: Adding an IRP-1 to an External Locking Device - PXL-250/SB-293 Configuration

Figure 2: Adding an IRP-1 to a Dry-Contact Device - PXL-250/SB-293 Configuration

2305 Bering Drive 01833-001 Rev. G
San Jose, CA 95131 USA
[phone] [phone] FAX [phone]
Web: www.kerisys.com E-mail: [e-mail] Page 2 of 4