Din Rail Mounting; Replacing A Single Module Within A System; Field Wiring Connections; System Wiring Guidelines - Spectrum Controls 1769 User Manual

2-10 Chapter 2: Installation and Wiring
NOTE
Field Wiring
Connections
User's Manual Pub. 0300241-02 Rev. A

DIN Rail Mounting

The module can be mounted using the following DIN rails:
35 × 7.5 mm (EN 50 022 – 35 × 7.5)
•
• 35 × 15 mm (EN 50 022 - 35 × 15)
Before mounting the module on a DIN rail, close the DIN rail latches. Press the
DIN rail mounting area of the module against the DIN rail. The latches will
momentarily open and lock into place.

2.7.2 Replacing a Single Module within a System

The module can be replaced while the system is mounted to a panel (or DIN rail).
Follow these steps in order:
1. Remove power. See important note at the beginning of this chapter.
2. On the module to be removed, remove the upper and lower mounting
screws from the module (or open the DIN latches using a flat-blade or
Phillips head screwdriver).
3. Move the bus lever to the right to disconnect (unlock) the bus.
4. On the right-side adjacent module, move its bus lever to the right
(unlock) to disconnect it from the module to be removed.
5. Gently slide the disconnected module forward. If you feel excessive
resistance, check that the module has been disconnected from the bus,
and that both mounting screws have been removed (or DIN latches
opened).
It may be necessary to rock the module slightly from front to back to
remove it, or, in a panel-mounted system, to loosen the screws of adjacent
modules.
6. Before installing the replacement module, be sure that the bus lever on
the module to be installed and on the right-side adjacent module or end
cap are in the unlocked (fully right) position.
7. Slide the replacement module into the open slot.
8. Connect the modules together by locking (fully left) the bus levers on
the replacement module and the right-side adjacent module.
9. Replace the mounting screws (or snap the module onto the DIN rail).

2.8.1 System Wiring Guidelines

Consider the following when wiring your system:
• Channels are isolated from one another by ±500 VDC maximum.
• As a general rule, allow at least 15.2 cm (6 in.) of separation for every
120 V of power.