BE1-MMS1 00
FUNCTIONAL DESCRIPTION,
continued
4
INPUT SIGNALS,
continued
Status and Alarm Input Signals
The BE1-MMS1 00 accepts the discrete input signal
combinations on four channels.
The inputs can be configured as pulsed (MCD) or sus
tained status inputs on each of the four input channels.
The BE1-MMS1 00 requires a de contact sense voltage
for the contacts and accepts pulses on the discrete
input channels (total of four channels available). The
BE1-MMS1 00 stores ten MCD events on each input
channel.
Inputs are scanned at 10 millisecond intervals. A
debouncing algorithm checks to verify that contacts
remain closed for at least three read cycles before
"counting" the transition as a valid pulse.
Momentary changes of up to 20 per second are ac
ceptable on each channel, with provision that only the
first ten will be stored for each channel.
When a contact transition event occurs, the BE1-
MMS1 00 sets a status bit "on" in the communication
port status message. The event will be detected by the
substation computer, RTU or master station on the
next poll.
For those systems incorporating dial-up communica
tions, the event bit can trigger a "call home" communi
cations session. In this session, the BE1-MMS1 00 dials
a prestored telephone number and establishes a data
communications session with the host. During this
session, data, including the event that initiated the call,
is uploaded from the BE1-MMS1 00 to the host.
Puls e Inp ut Signals
The four status inputs can be configured as pulse
meter inputs. As a Pulse Transducer, the BE1-MMS1 00
accepts the following input signal combinations: 1, 2, 3
or 4 Form A or B contact inputs from a utility pulse
initiator.
Metering output signals (pulses) are supplied as de
inputs from metering KYZ contacts. The BE1-MMS1 00
uses de sense voltages on the contacts and accepts
pulses on the status input channels (total of four
channels available).
Pulse repetition rates of up to 20 per second on each
channel are acceptable.
Inputs are scanned at 10 millisecond intervals. A
debouncing algorithm checks to verify that contacts
remain closed for at least three read cycles before
"counting" the transition as a valid pulse.
Once per minute the BE1-MMS1 00 computes the
pulse count on a per channel basis and reports the
data via the communication port.
Once every fifteen minutes and on power down, the
BE1-MMS1 00 stores the total pulse count in flash RAM
for the 15 minute interval on a per channel basis. Data
is retained for 36 days and is available for download
ing to a master station via the communication port.
OUTPUT SIGNALS
Dis crete Outp ut Signals
The BE1-MMS100 has six Form "A" output contacts for
use in control or for pulse inputs. Pulse outputs can be
set to represent watts, vars, pulse in 1, pulse in 2,
pulse in 3, pulse in 4, or the sum of any of these. The
maximum output pulse rate is 30 per minute.
The relays operate on a select and operate basis.
Communications Ports
The BE1-MMS1 00 has three physical serial ports:
•
An RS-232 port on the front of the unit.
•
An RS-232 port on the rear of the unit.
•
An RS-485 port on the rear of the unit.
The user has a choice of using either the rear RS-232
port for data acquisition and control, or the RS-485
port. The choice is made using the
HMI
setup proce
dures.
The BE1-MMS1 00 supports three data acquisition and
control protocol forms (only applicable to the rear
ports):
•
A Basler TNP data format identical to the ET V4.4
format is used to maintain product compatibility.
•
Extended TNP data formats are used for the one
minute and fifteen-minute values.
•
Modbus™ data formats.
•
DNP 3.0 data formats.
The port supports an 8,N, 1 byte format and will
connect at the following baud rates: 300, 600, 1200,
2400, 4800, 9600, and 19,200.
DISPLAY FEATURES
The BE1-MMS1 00 has five (5) indicating LEOs, a
keypad and a LCD display.
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