Specifications

I.B. ATS-I005
Page 20
Effective 6/00
the chassis has been moved to the Program position.
Any operator associated with programming the IQ
Transfer will quickly discover that IQ Transfer program-
ming is just a matter of simple, repetitive steps. Because
of the importance placed, however, on this function and
its critical relationship to the systems proper functioning,
Section 5 is dedicated to the Programming Mode. Refer
to this section and Table 5.1 for details.
4.8 COMMUNICATIONS
IQ Transfer is an IMPACC (Integrated Monitoring
Protection and Control Communications) compatible
device. As such, it can be remotely monitored, con-
trolled and programmed when equipped with the com-
munications option. The IQ Transfer is supplied with a
communications port as standard. This permits it to
have the communications option supplied from the fac-
tory or retrofitted at a later date. The communications
option is achieved by mounting a small, addressable
communications module, the PONI, to the back of the
IQ Transfer (Paragraph 2.4 and Figure 2-3).
IMPACC is a noise immune communications system
that permits communications from the IQ Transfer to a
master computer via a high frequency carrier signal over
a shielded twisted pair of conductors. The shielded
twisted pair of conductors can extend up to 7500 feet
without the use of repeaters. Communications between
IMPACC compatible devices, such as IQ Transfer and
the master computer is made possible by the INCOM
(Industrial Communications) chip, which accounts for
the system’s high degree of reliability.
4.8.1 IMPACC POWERNET SOFTWARE
PowerNet software provides the ability to monitor and
record power distribution system data as it is occurring.
PowerNet is a Microsoft Windows compatible applica-
tion featuring user friendly, menu-driven screens with
easy set-up and operation. Additional features include:
• System/device alarm logging and reporting
• Time/event historical data logging
• Data trending
• Information storage/retrieval by device event
• Hardware diagnostics
• Dedicated computer not required
• Security password protection
• Gateway interface for connectivity to other information
networks
IMPACC PowerNet also provides the following features
unique to the IQ Transfer:
• Duplication of IQ Transfer front panel mimic bus
showing available and connected sources.
• Voltage and frequency measurements of Source 1
and Source 2. Voltage measurements of the Load.
• Display of all programmed setpoint values. These val-
ues may be changed and either saved to a file or
downloaded to the IQ Transfer over IMPACC.
If the IQ Transfer Run/Program switch is in the
Program position, the setpoints cannot be down-
loaded over IMPACC.
• History information:
Source 1 Engine Run Time
Source 2 Engine Run Time
Source 1 Available Time
Source 2 Available Time
Source 1 Connected Time
Source 2 Connected Time
Load Energized Time
Number of Transfers
All history information is in hours and minutes. Each
individual value is resettable over IMPACC.
• Time-stamped history (time/date/reason) for all previ-
ous transfers.
• Capability to initiate an engine test.
• Updates the IQ Transfer real-time clock.
4.9 IN-PHASE TRANSITION
In-phase transition is an open transition with both
sources in-phase. The same anticipatory scheme used
for closed transition is also used for in-phase transition.
The advance angle is calculated based on the frequen-
cy difference between the two sources and also the
response time of the breaker. This results in the opti-
mum reconnect angle of 0 degrees for all of the frequen-
cy difference values.
The criteria for in-phase transition are similar to closed
transition. Both sources must be available and the fre-
quency difference must be less than the in-phase transi-
tion frequency difference setpoint (0.0 to 3.0 Hz). When
these conditions are met, the IQ Transfer will monitor
the phase difference between the two sources. The
synchronization timer will count down and be displayed
as “TSIP” while waiting for synchronization to be detect-
ed. When the phase difference is within the advance
angle window, the “transfer” command is given. This is
NOTICE