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MES53xx, MES33xx, MES23xx Ethernet Switch Series 30

3.3 Power module installation

Switch can operate with one or two power modules. The second power module installation is

necessary when greater reliability is required.

From the electric point of view, both places for power module installation are equivalent. In the

terms of device operation, the power module located closer to the edge is considered as the main

module, and the one closer to the centre—as the backup module. Power modules can be inserted and

removed without powering the device off. When an additional power module is inserted or removed, the

switch continues to operate without reboot.

Figure 23. Power module installation

You can check the state of power modules by viewing the indication on the front panel of the

switch (see Section 2.5.2) or by checking diagnostics available through the switch management

interfaces.

3.4 Connection to power supply

1. Prior to connecting the power supply, the device case must be grounded. Use an insulated

stranded wire to ground the case. The grounding device and the ground wire cross-section

must comply with Electric Installation Code.

2. If you intend to connect a PC or another device to the switch console port, the device must

be properly grounded as well.

3. Connect the power supply cable to the device. Depending on the delivery package, the

device can be powered by AC or DC electrical network. To connect the device to AC power

supply, use the cable from the delivery package. To connect the device to DC power supply,

use wires with a minimum cross-section of 1 mm

4. Turn the device on and check the front panel LEDs to make sure the terminal is in normal

operating conditions.

Power module fault indication may be caused not only by the module failure, but also by

the absence of the primary power supply.

ELTEX MES23xx User Manual

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