FIKE CORPORATION
FM 3020541 Fike Explosion Protection System Page 17 of 32
P/N E06-051 Rev. 8 10/06
5.2 DISARMING THE EPC
There are three possible methods for disarming the EPC:
1) Disable input
- Input P4-2 is a contact for remote disable. This contact can be wired to a local disarm
switch or door (inhibit) switch. Contact open/closure will initiate the disable sequence; refer to exhibit 4-
10.
2) AM command
– The AM provides an Enable /Disable menu to provide the ability to control the EPC via
the AM pushbuttons. Toggling the pushbuttons from this menu will toggle the enable status of the EPC.
Refer to the AM manual, E06-053, for complete instruction.
3) Power
– Disarm through total power off. In this case the 20 most recent events are stored into the
Explosion Protection Controller’s (EPC’s) history. All events are stored in relative time as the EPC’s
clock will be shut down on power off. If the complete PSU is powered down, not recommended, the
Annunciator will also be shutdown and the 40 most recent events will be stored in the Annunciator
Module (AM) history.
As noted in section 5.1.2, the EPC will enter a non-latching Trouble State when the EPC is disarmed.
WARNING: Vessel entry and maintenance requirements shall be performed only after following the
Disarming of the EPC by power removal and following safe vessel entry maintenance
practices acceptable to the Authority Having Jurisdiction (AHJ), i.e. OSHA, or the
manufacturing facility.
5.3 EVENT HISTORY
The EPC can store up to 16 history records in a
First in First out (FIFO) table. A time stamp is
created with each event recorded. The time
information is updated each second and will be
relative between consequent events.
The following codes are retrieved through
EPWorks Software.
01 Detection 1 wire open 17 Supervisory input wire open
02 Detection 1 wire short 18 Supervisory input wire short
03 Detection 1 warning pressure 19 Supervisory input activated
04 Detection 1 threshold activation 20 Fire Bus wiring fault
05 Detection 1 rate-of-rise activation 21 Activation via remote fire bus
06 Detection 2 wire open 22 Series firing voltage fail
07 Detection 2 wire short 23 Series firing wire fault
08 Detection 2 warning pressure 24 Fire capacitance depleted
09 Detection 2 threshold activation 25 EPC outputs activated
10 Detection 2 rate-of-rise activation 26 EPC powered up & armed
11 Detection 3 wire open 27 One cross zone input activated
12 Detection 3 wire short 28 Loss of power shut EPC down
13 Detection 3 activation 29 EPC has been serviced
14 Disable input wire open 30 Configuration changed
15 Disable input wire short 31 EPC has been enabled
16 Disable input active 32
Event list cleared by EPWorks
Exhibit 5-4 Event History Table
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