Sheet E-7031: One SEG-A Close-Permit Pair to ATS7-01, and the Start Request In

What this sheet shows

E-7031 is the control interface between generator plant SEG-A and ATS7-01 for path 7-01. The title reads ATS7-01 / SEG-A plant control interface, revision PE-P1, dated 2026-09-26. The path line under it assigns the plant terminals: start on TB-GPC-SEGA:3/4, and close permission on TB-GPC-SEGA:1/2, per E205. Three headers name the parties on the sheet. The left header is generator plant SEG-A, terminal block TB-GPC-SEGA. The center header is close permission to E7021. The right header reads ATS terminals: see E7021, and no ATS terminal strip is drawn under it. Combined close permit A is terminal 1, conductor Z7-SEGA-PERMIT-7-01-A, labeled ATS7-01 permit A, to 7021. Combined close permit B is terminal 2, conductor Z7-SEGA-PERMIT-7-01-B, labeled ATS7-01 permit B, to 7021. The start request is marked from 7021. TB1-ATS7-01:1 start request A, conductor Z7-ATS7-01-START-REQ-A, lands on terminal 3, labeled SEG-A start request input - ATS7-01 A. TB1-ATS7-01:2 start request B, conductor Z7-ATS7-01-START-REQ-B, lands on terminal 4, labeled SEG-A start request input - ATS7-01 B.

What the one pair carries

Note 1 calls this one integrated permit per path: the plant capacity declaration and the staged close permit are carried in this one pair, conductors Z7-SEGA-PERMIT-7-01-A and Z7-SEGA-PERMIT-7-01-B. Note 2 states the permit is valid only while the generator bus is qualified and sufficient available capacity exists and this path holds its assigned load step. Permit thresholds, including kVA, shall follow the plant capacity and load-step design. No kVA number is printed on this sheet. Note 3 states the effect of loss: loss of the permit blocks a new close only; it does not trip an already connected path. Fault and position interlocks remain priority. That limit is part of the path architecture discussed in the electrical architecture notes.

Start request, and the match still open

Note 7 says the start request goes to the parallel-plant controller. Contact ratings and control supply require OEM match. The drawing shows that request as the pair from 7021 into TB-GPC-SEGA: TB1-ATS7-01:1 start request A on Z7-ATS7-01-START-REQ-A at terminal 3, and TB1-ATS7-01:2 start request B on Z7-ATS7-01-START-REQ-B at terminal 4. Note 5 says the TB1-ATS7-01:1/2 start request is shown on E7021. The same note names project terminals TB1-ATS7-01:11/12 and TB-ATS7-01:13/14, and it states OEM controller pin mapping: by OEM. Note 4 says to specify an isolated OEM receiving input. The supplier shall confirm the input supply arrangement and contact ratings. Note 6 says to coordinate input load steps and recharge separately from module return delays, and that AC input limiting requires verified OEM function. Note 8 sets the sheet's scope: path 7-01 / segment A. Other paths: see their dedicated interface sheets.

Status

Published at Design Development — Public Edition P1 (title block 2026-09-26, revision PE-P1; footer 2026-09): a reference design for study and evaluation. What the sheet states is the terminal assignment on TB-GPC-SEGA, the one pair that carries the capacity declaration and the staged close permit, the conditions in note 2, and the rule that loss of the permit blocks a new close only and does not trip an already connected path. What it leaves for confirmation is written as supplier and OEM work: an isolated OEM receiving input, with the input supply arrangement and contact ratings for the supplier to confirm; OEM controller pin mapping by the OEM; contact ratings and control supply that require OEM match; and AC input limiting, which the note says requires verified OEM function. Permit thresholds, including kVA, shall follow the plant capacity and load-step design.

Sheet guide — the devices on this drawing

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