Step 09.18 — Clip the SSR onto the rear rail¶
Step 18 of 36 · Chapter 09 — Electronics bay
Tap to enlarge
Parts:
- the SSR on its bracket · already on the bench
Do:
- Pull the latch open with the 2.5 mm screwdriver; it locks open.
- Hook it over the rear rail left of the PSU, release the latch, mind your fingers.
- INPUT to the front rail, LOAD to the rear.
Check
SSR latched square with no rocking, both terminal pairs reachable with a PH2 driver, roughly 30 mm of clear rail between SSR and PSU.
What you're looking at
The bracket's spring latch holds the SSR on the rail and locks open so both hands are free. Orientation is the point of this step: control terminals facing the front rail, load terminals facing the rear, so no mains conductor crosses the bay.
Caution
Rev D+ / LDO: the SSR body is stamped "EARTH THE MOUNTING RAIL". Your DIN rails bolt through the deck panel into the aluminium bed extrusions (09.5), so they are earthed once the frame PE lands in Ch 10. Verify rail-to-frame continuity with the multimeter at Checkpoint #1 — do not assume it. src
Tip
LDO flags the SSR wiring as "critical — an incorrect connection can cause catastrophic damage". Getting the orientation right now makes Ch 10 unambiguous (survey §4.4 #8).
Good stopping point · ~30 min since the last one
PSU voltage selector confirmed at 115 V, PSU and SSR both on their DIN brackets and clipped to the rear rail. Mains terminals still bare; leave the PSU cover on and the cord bagged.
Source: Voron manual p.171 · LDO wiring guide § Checkpoint #1