J890 and J892 Installation and Connection

Introduction

After the appropriate switch settings have been made, follow these steps to install the J890/J892 Interface module in a primary (AS-H819-103 or AS-H827-103, AS-H827-107) 800 series I/O housing. The module is 1.5 slots wide.

Installing the J890/J892 Module

The following table lists the steps for installing the J890/J892 module:

Step	Action
1	Turn off the power to the I/O housing.
2	If you are installing a J892, make sure that SW7 on the ASCII communications DIP switch pack is set to the 0 position (on-line).
3	Insert the Interface module in slots 2 and 3 of the primary housing (directly to the right of the power supply unit). Press the module firmly to ensure that it is seated properly. Position of a J890 interface module in a primary I/O housing.
4	Tighten the two captive screws located at the top and bottom of the interface module.

Connecting the J890/J892 to a Drop Cable

The following table lists the steps for connecting the J890/J892 to a drop cable:

Step	Action
1	I/O drop malfunction Do not disconnect the drop cable while the system is running; disconnecting can cause other I/O drops to malfunction.
2	a: If the drop cable connection is a F connector nut, install it directly onto an RIO cable port using a 7/16 in open-end wrench-finger tightening is not sufficient (see Figure below (a)) b: If the drop cable connection is a BNC connector nut, use a Modicon 52-0752-000 F-to-BNC adapter to make the RIO drop connection (see Figure below (b))
3	If you are installing a J892 for ASCII device support, connect the ASCII device cables to the ASCII ports at this time.
4	Apply power to the I/O housing. The I/O drop is ready for checkout; refer to Appendix B for diagnostic messages provided by the LEDs on the J890/J892 front panels. Note: For a complete discussion of planning and installing an RIO drop, refer to the Remote I/O System Planning Guide (GM-0984-RIO).