Manual / Guide · 1974
E-580059-A: Selector Circuit Explanation (issue 12, with Addendum 1, 1974)
Circuit explanation for selector H-580059; the addendum covers drawing issues 13–22.
Manual / Guide · 1974
Circuit explanation for selector H-580059; the addendum covers drawing issues 13–22.
a CIRCUIT | M ian s SELECTOR CIRCUIT LOCAL a OR INCOMING BATTERY Di 210 SEARCHING ROUTINER ACCESS Vista H-580059-A o G ay 3 ra @ AL F < ically for cireuit ’ : apply to later Added te HI print for appropriate E Addendum | ISSUE 13: L te Cover H A portion of "F' Wiring is designated "G" Wiring and a portion Issues 13) of "E" Wiring is designated "H" Wiring. "GC" Wiring is super- thru 22 seded by “H" Wiring. These changes were made to enrrect a 6/74: mb eondition created at Iesue 12 which disabled the “differential Issue 12 | hold” feature for relay F. To correct an error in the modification mede at Issue 13, the wiring between B spring 10 and VON spring 1 is designated "Gc" Wiring. ISSUE 15: Issue 12 changes removed A springs 1-2 from the release magnet operate circuit. This change created a problem when the circuit was accessed by the Central Office equipment routiner. The trouble would occur when the routiner shunted relay F and operated relay A. Sinee relay A would now no longer open the circuit to the release magnet, the circuit would release instead of stepping to the next idle terminal. Issue 15 changes provide "J" Wiring to supersede "F" Wiring and part of "H" Wiring is designated "I'' Wiring to be removed with this issue. ; LESUE 16: Corrected an Issue 15 drafting error. ISSUE 17: Added new Figures 8 and 9 to provide a peg count lead on switch- through of this circuit. Figures 8 and 9 will use "“v"' Wiring which will disable the SUPY and EC leads. ISSUE | DRAWING HO. 12 | B-580059-A-ADDEND.1 E. G. Conner 9.79. 7 E580059~-A-ADDEND 1) @URET 2 ISSUE 18: Added "S" Wiring and Apparatus to supersede "R" Wir ing and "X" Wiring. “S" apparatus consisted of diode CR1 which was formerly shown as FIG. RT and used in FIGS. 2-3, 6 and 7-8. This change was made to open ground to the #1 winding of relay F when the A relay released and thereby prevent the operation of the "F" relay if the call is abandoned during rotary stepping. ISSUE_19: Rated Figures 3, 4 and 9 NAFM superseded by Figures 1, 2 and 8 respectively. This change was made to eliminate duplicate Figures which resulted with the discontinued use of "X'' Wiring and the use of "S" Wiring in all Figures. ISSUE 20: Removed suffix "E" from TABLE B. ISSUE 21: Added diode CR3 ("K" Wiring and Apparatus). This change was made to prevent the unguarded period on the C wiper during the operation of relay F on switch through. ISSUE 22: “u" Wiring supersedes "T" Wiring. Part of "E" or "J" Wiring is designated "N" Wiring and is removed with this issue. "K" Wiring and Apparatus is discontinued. The purpos’ of this change was to permit the removal of CR3 ("K" Apparatus). | B-580059-A-ADDEND. 1 PRRBES UE SELECTOR CIRCUIT LOCA. OR INCOMING BATTERY SEARCHING < RELAY INTERRUPTED a WITH ROUTINER ACCESS S H-580059-A S & ve & li P Written ly for circuit issue #12 & but may » apply to later te rink ior fOpri Added H print for appropriate E Feature (£) and FEATURES iChanged Seetions (a) Supervisory ground for "permanent" alarm 4.00 & 6.00 (b) Routiner access 3/70:4k D, YAMASAK (ce) Provides lead EC for restricted service as required b, esse (d) Arranged for use with type B SATT system Okey (e) Quick seizure on incoming calls Issue LL (f) Arranged for use with offices having timed discormection OPERATION 1 00 Seizure (Operated: VON springs). 1.01 Intermediate Selector (‘W'' wiring) When used as an intermediate Selector, resistance (2C) battery on lead C marks this switch idle to preceding equipment. When seized, a loop is closed across leads +LINE and -LINE, closing A. Relay A operates and closes B. Relay B operates, grounds lead C to mark this switch busy, closes #2C and grounds ("P" wiring) lead SUPY. Relav C operates and connects lead DIAL TONE & GRD to lead +LINE vie #2A. WHITER BY . APPROVED ISSUE | DRAWING NO. 12 | Be 580059-A v 12/66) [evar 4 Ee 589059-A 1.02 Incoming Selector ("%" Wiring) When used as an incoming Selector, absence of ground on lead C marke this switch idie to preceding equipment. When seized, a loen is closed across leads +LINE and “LINE, closing A. Relay A operates and closes B and #2C in multiple. Relays B and C operate as described in Section L.OL. 2.00 Vertical Stepping (Operated: Relays A, B, C; and VON springs) Relay A fellows the dial pulse(s) and when at normal, opens B and closes #1C and the VERT magnet in series. Relays B and C remain operated during pulsing due to their slow-to-release characteristics. The VERT magnet operates and steps the wipers to the dialed level. On the flest vertical step the VON springs restores, close D and open #2C. Relay D operates and locks. At the comple- tion of the digit, A re-operates, closes B and opens #1C and the VERT magnet. After its slow-to-release interval, C reateres, disconnects lead DIAL TONE & GRD from lead +LINE vie Hoa, connects ground to lead +LINE via #2A, and closes the ROT magnet. The VERT magnet restores. When the dialed level is intended for restricted service, the LT NP SPGS operate, connecting ground via lead EC1 to wiper C marking this level busy. 3.00 Rotary Stepping. (Operated: Relays A, B.and.D) The ROT magnet operates, steps its wipers to the first bank contact, and opens D via its interrupter springs. Relay D restores and opens the ROT magnet. The ROT magnet restores, cioging D. When the associated trunk is busy, D re-operates and closes the ROT magnet. The ROT magnet operates and steps its wipers to the next bank contact. This relay-interrupted stepping continues until resistance battery is encountered by wiper C or the eleventh rotarv step is taken, (All-Trunks-Busy). &.00 Switeh Through (Operated: Relays A, B and D) Idle trunks are marked by resistance battery on the C bank contacts. When an idle trunk is found, resistance battery via wiper C closes #1F. Relay F operates its "Xx" eontacts only, and locks via #2F and the ROT magnet. Relay F operates fully, opens A, connects leads +LINE, -LINE, EC, and C to wipers "+" and '-", EC, and C, res- pectively, connects ground to lead TONE ST, opens 8B. Relay A restore. After its slow-to-release interval, relay B restores, and disconnects ground (''P" wiring) from lead SUPY, and opens relay D. Relay D restores. i308 | DRAWIRE BO. 12 | Be 580059-A ee E- 580059-A § 06 All-Trunks-Busy (Operated: Relays A, B and D) When an idle trunk is not found, relay-iuterrupted stepping continues until the eleventh rotary step is taken. On the eleventh rotary step, the CAM SPGS operate, open D to prevent further rotary stepping and transfer +1INE via #24 from ground to lead BUSY TONE & GRD. Relay D restores. 6.00 Release 6.01 After Switch-Through (Operated: Relay F) When ground is removed from wiper C by the succeeding equipment, F is opened. Relay F restores, (the magnet- ically opposed windings of #1 and #2F provide for a fast release), disconnects leads +LINE, -LINE, EC, and C from wipers "+", "~", EC, and C, respectively, removes ground from lead TONE ST, and closes the RLS magnet. The RLS magnet operates and releases the shaft. When the shaft returns to normal, the VON springs operate, open the RLS magnet and connect resistance (#2C) battery to lead C marking this switch idle. The RLS magnet restores. The switch ie now at normal. 6.02 From All-Trunk-Busy (Operated: Relays A and B) When the calling party disconnects after receiving busy tone, the line loop is opened to A. Relay A restores and opens B. Relay B restores after its slow-to-release inter: val, removes ground from lead C, disconnects ground ("P" wiring) from lead SUPY, and closes the RLS magnet operates and releases the shaft. When the shaft returns to normal, the VON springs operate, connect resistance. (#2C) battery to lead C, and opens the RLS magnet. The RLS magnet restores. The switch is now at normal. 7.00 Reoutiner Access When Routiner access is required, leads +LINE, -LiNE, BH, EC, C and RM are connected to the Routiner. Operation is the same as described in Sections 1.00, 2.00, 3.00, 4.00, 5.00 and 6.00. During rotary stepping, ground pulses are sent to the Selector via lead RM. After testing, the Routiner grounds lead BH, closing A to hold the switch operated, opens the line loop to release the line under test, and grounds lead RM to step the Selector to the next circuit. ISSUE | DRAWING HO. 12 | Ee 580059-A FORE COLA