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General Information
1.1 FOREWARD
The PowerManager™ range of products all have common fea-
tures built into their controllers. These features are such things
as alarm logging, trending, modem dialout, flexible alarm setup,
ILC (Integrated Logic Controller), etc. These common features are
described in a separate Technical Manual, Part Number 0E8444.
This manual describes the features of the control system that are
specific to the PowerManager System Controller (PM-SC) product.
For information on how to do things with GenLink, consult the New
Generation GenLink Manual, Part Number 0E8468, and the context
sensitive online help system.
1.2 INTRODUCTION
The PowerManager System Controller (PM-SC) provides the ability
to automate the starting and stopping of multiple generators (up
to ten), depending on several possible start scenarios. The PM-SC
can be set up to control separate multiple transfer switches, these
can be either the manufacturer's own communications enabled
switches (MTS), the manufacturer's standalone transfer switches
(GTS), or third party switches. The PM-SC can also be used
with a SINGLE Soft Load Transfer Switch (STS). Up to eight MTS
switches can be connected to a PM-SC. For third party or GTS
switches there are three groups of settings for permissive and
load shed relays plus a critical load setting. These relays can be
connected to multiple transfer switches as required.
The PM-SC is designed to work with the manufacturer's genera-
tor sets that have paralleling capability (designated PM-PC). The
transfer switches supplying the equipment (non-critical) load are
provided with input signals for start permissive and trip to neutral.
This allows for flexible system startup and load shedding capabili-
ties. The overall system is known as the Modular Power System
(MPS). The PM-SC can control generator sets with different power
ratings, and various rating transfer switches may be used to allow
system flexibility. A real time clock and calendar is included so the
user can program the PM-SC to exercise the system as required.
1.3 OVERVIEW
The PowerManager System Controller (PM-SC) provides the fol-
lowing features:
•
Control of up to 10 paralleling generators (using PM-PC con-
trols).
•
Control of the manufacturer's communications enabled transfer
switches (MTS).
•
Provides three levels of transfer switch permissive control with
two contacts per level for third part or the manufacturer's GTS
range of transfer switches.
•
Control of Soft Load Transfer switch (STS).
•
Backup modes of operation for equipment failure.
•
Provides three levels of load shed capability.
•
Ability to control generator sets with different power ratings.
•
Real time clock and calendar included - user programmable to
set exercisers based on date and time of day.
•
Monitoring/set-up of parameters and commands using New
Generation Genlink software either locally via bottom panel con-
nector, remotely via internal modem, or remotely via an Ethernet
link (this allows internet connection).
4
•
Command settings, times, dates, etc. are easily entered using
pull-down windows.
•
Remote/local monitoring and set-up of satellite generator
parameters and commands using New Generation GenLink
software.
•
RS485 serial communications between PM-SC and satellite
generators.
•
Modbus Protocol – PM-SC can be integrated with building
management systems.
•
Battery back-up of PM-SC for 30 minutes in the event of total
power failure.
•
Commands and parameter settings are retained indefinitely in
EEPROM.
•
NEMA 1 wall-mount enclosure.
1.4 PROGRAMMING OVERVIEW
The PM-SC is programmable from a PC via an RS232 interface
using the Modbus RTU protocol. The manufacturer uses it's own
proprietary GenLink software to accomplish this.
Programming is performed by issuing a series of Modbus com-
mands to the PM-SC. These commands are generated by filling
in forms within GenLink, which will then be translated into com-
mands to send to the PM-SC. Each command can apply either a
standby mode of operation (required as default) or an exercise
function.
The PM-SC also stores the maximum kW output for each individual
generator, in order to be able to determine which generator will
supply what percentage of the load. The demand is always shared
between generators. In cases where there is a mixture of generator
ratings, the demand is shared in proportion to the maximum kW
settings of the individual generators. For example, if there are two
300kW generators as well as one 400kW unit, the 300kW units
will each supply 30% of the load while the 400kW unit will supply
40% of the total load.
2.1 CONNECTING VIA GENLINK™
The PM-SC can be connected to by New Generation GenLink either
remotely, or locally via the RS232 interface. In either case a copy
of New Generation Genlink is required on the programming PC.
2.1.1
LOCAL CONNECTION
To connect locally, simply plug one end of the RS232 cable
(supplied) to the "D" connector underneath the cabinet, and the
other end to the PC's com port. Click on the Genlink icon to start
Genlink. Normally you will use com port 1 and Genlink is set to
this by default. if you need to change the com port, use the "Tools"
pull down menu then select "Change com port settings" . Once the
correct com port has been selected, it will be remembered for the
next session.
Click the "Connect" button to connect via Genlink, this will take a
few seconds during which time some progress indicators will be
displayed.
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