MOBILTEX® DATA LTD.
TITLE:
Installation and Operating Instructions
Calgary, Alberta
DOCUMENT NO.:
SPI1-MAN-001
SHEET:
36 of 57
REV:
1.14
4
Basic Operation
4.1 Charging
Prior to use, the internal battery of the SPI1 must be charged. This is accomplished by attaching the unit to a power
source via one of the relay ports A, B or C on the side of the box. Use cigarette lighter adapter cable W16400CPI07
when charging from a vehicle cigarette lighter socket. Use 120VAC charger adapter cable W16400CPI08 when
charging from AC mains. The unit may also be charged when connected to an appropriately equipped rectifier. If the
unit is to be attached to AC power while an interruption operation is occurring, then it is favoured that port A be used
for the power source. This will allow the SPI1 to synchronize relay switching to the AC waveform.
The current charge level of the battery is indicated on the top right side of the main status screen. Continue charging
until this value is greater than 98%. Leaving the charging source attached to the SPI1 will
not
damage the internal
battery. More detailed information on the current charge state of the battery may be found in the battery status screen
by pressing [MENU][1][5] while the main status screen is showing.
When the SPI1 Portable Interrupter is fully charged and a solid state relay is used for interruption, approximately 7
days of run time can be expected when operating on internal battery. The SPI1 Stationary Interrupter internal battery
will provide approximately 8 hours of back up power in the event of main power failure.
4.2 Power Up and Power Down
The SPI1 Portable Interrupter and post mid-September 2013 SPI1 Stationary Interrupters can be powered up in one
of two ways, by pressing the Power On/Off key or by plugging in a charging power source on one of the relay drive
ports A, B or C. SPI1 Stationary Interrupters produced prior to mid-September 2013 can only be powered up by using
the Power On/Off key.
The SPI1 can be powered down by pressing the Power On/Off key. The SPI1 will display a message indicating that
it is shutting down. With version 1.12 or higher firmware, a double beep will sound as the unit powering down. While
the unit is powered down, the relay drive is left in a state that will keep the cathodic rectifier in an on state, delivering
current to the pipeline.
Note that the SPI1 Portable Interrupter and post mid-September 2013 SPI1 Stationary Interrupters cannot be turned
off while a charging power source is attached.
4.3 Configuration
Three items must be configured in the SPI1 prior to operation, these are relay type, time zone, and offset. The
configuration menu is entered by pressing [MENU][3] from the main status screen. There are seven options that can
be adjusted from that menu. The menu is split between two page displays, where the next page may be selected by
pressing [0].
4.3.1
Relay Type
The SPI1 has been designed to be extremely versatile in its capability to drive many types of relay devices used to
interrupt rectifier current. To allow for this, the SPI1 must be programmed with a relay type that encodes the necessary
information to drive a particular relay in the correct manner. All Mobiltex
®
provided relays will have a relay type
printed on the label.
For relays not provided by Mobiltex
®
, please see Appendix A for information on computing the correct relay type
number. Setting this value incorrectly may cause erratic operation of the interruption relay.
4.3.2
Time Zone
All scheduling and time display on the SPI1 is performed using local time. The GPS receiver on the unit retrieves
time in UTC (GMT) format. This requires that the SPI1 be programming with the offset from UTC to local time, in
hours. The SPI1 does not perform automatic daylight savings time compensation, the offset must be changed manually
when daylight saving time changes occur. Common offset values are shown on the SPI1 when changing the time
zone field.
