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Siemens Application Guide «Fire Mode» CM1A5192en_01
Building Technologies Essential Service Mode (in-depth information) 23.10.2007
The following parameters will need to be considered for ESM even if P1210 is dif-
ferent to setting 6 in normal operation mode:
P1212 (time to first restart) = 30 seconds default
P1213 (restart time increment) = 30 seconds default
If P1210 = any setting other than 6 when ESM is not activated (normal operation mode),
when ESM is active the setting of 6 will not be visible as this will occur internally.
6.6.5 Acknowledging a fault when ESM/Fire Mode is first en-
abled
If a fault is active prior to ESM/Fire Mode being enabled, when ESM is enabled the
SED2 will acknowledge, restart and ignore all ‘soft faults’ and attempt to acknowl-
edge and restart any ‘hard faults’. If a hard fault is still present, then the SED2 will
trip and attempt again indefinitely or until the SED2 is destroyed.
6.7 Advanced settings
6.7.1 ESM/Fire Mode Control Words for the SED2
P1271 has introduced two new control words that will take priority once ESM has
been enabled. These control words have no effect on standard
1a
operation of the
SED2.
P1271 in000 ESM Control Word 1
Bit00 ON/OFF1 Ignored (drive always runs)
Bit01 OFF2: Electrical stop Always set (cannot be changed)
Bit02 OFF3: Fast stop Always set (cannot be changed)
Bit03 Pulse enabled Always set (cannot be changed)
Bit04 RFG enabled Always set (cannot be changed)
Bit05 RFG start Always set (cannot be changed)
Bit06 Setpoint enabled Always set (cannot be changed)
Bit07 Fault acknowledge Always set (cannot be changed)
Bit08 JOG right Selectable
Bit09 JOG left Selectable
Bit10 Not used Ignored
Bit11 Reverse (setpoint inversion) Selectable
Bit13 Motor potentiometer MOP up Selectable
Bit14 Motor potentiometer MOP down Selectable
Bit15 CDS Bit 0 (Hand/Auto) Forces Auto Mode (cannot be changed)
P1271 in 001 ESM Control Word 2
Bit00 Fixed frequency Bit 0 Selectable
Bit01 Fixed frequency Bit 1 Selectable
Bit02 Fixed frequency Bit 2 Selectable
Bit03 Fixed frequency Bit 3 Selectable
Bit04 Not Used Ignored
Bit05 Not Used Ignored
Bit08 PID enabled Selectable
Bit09 DC brake enabled Selectable (not generally used in HVAC functions)
Bit11 Droop enabled Selectable (not generally used in HVAC functions)
Bit12 PID disabled Selectable
Bit13 External fault 1 Ignored
Bit15 Not Used Ignored
bit 07 ............ 04 ..... 02 01 00
bit 15 ............. 12 ................ 08
Note
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