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PC3000 Complete Installation guide iss 12 - Elektro-Trading

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The Power Supply<br />

4-6<br />

Link 2 selects the mode of operation.<br />

LK1<br />

LK2<br />

NO 'HOLDOFF'<br />

'HOLDOFF' for 1s<br />

The module is supplied with the link fitted in the 'NO HOLDOFF' position.<br />

Setting the watchdog relay snubber protection<br />

A resistor-capacitor combination is<br />

provided for contact protection. It may<br />

be connected across normally open or<br />

closed contacts. Link 1 selects the position.<br />

The snubber is connected across the<br />

normally open contact when the link is<br />

fitted in the position closest to the front of the pcb.<br />

LK1<br />

Snubber<br />

Protection Link<br />

Fuse replacement<br />

The only maintenance operation possible on<br />

Fuse<br />

the <strong>PC3000</strong> Power Supply is fuse replacement.<br />

The fuse is located on the printed circuit board.<br />

To gain access the module must be removed from<br />

the rack as described previously. The fuse may be<br />

accessed through the side of the modules’ metal sleeve.<br />

A suitable replacement fuse is a glass 20mm, 1.6A time lag type (EN60<strong>12</strong>7 type T)<br />

(Eurotherm part number:CH510162).<br />

N/O<br />

N/C<br />

<strong>PC3000</strong> <strong>Installation</strong>

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