Lamtec ETAMATIC, Manual, Page: 94 / 136

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9 Appendix
Key to process sequence charts
Any condition
t1 Wait for gas safety interlock circuit air pressure moni-
tor min. scan any
t2 Time for pressure build-up in the gas test line (only
with leakage test activated) 2 sec.
t3 Servo drive running time 30-60 sec.
t4 Re-circulation damper delay 0-t5
t5 Aeration time 30-999 sec. adjustable
t6 Transformer pre-energise time 3 sec.
t7 1st safety period 4 sec.
t8 Stabilisation period 3 sec.
t9’ 2nd safety period 5 sec.
t9’’ 2nd safety period 3 sec.
t9’’’ Safety period 3 sec.
t9’’’’ Safety period 4 sec.
t10 Operating phase any
t11 Control mode any
t12 Time for pressure relief in the gas test line 3 sec.
t13 Post-ventilation time 0-999 sec. adjustable
t14 Control elements at base load
t15 After-burning time 0-20 sec.*** adjustable
t16 Flame extinguishing check 5 sec.
t17 Leakage test, gas valve 2 30 sec.
t18 Triac selftest