4–10
M‑3311A Instruction Book
b. Press the Left arrow pushbutton once,
then repeat the previous step as neces-
sary to input the desired Seconds.
c. When the desired Seconds have been
input, then press
ENTER
. The following
will be displayed:
DATE & TIME
TIME error diag
COMMUNICATION SETUP
Communication setup can be accomplished utiliz-
ing either IPScom
®
or the HMI. The Communication
setup consists of the setup of the following features
and functions:
• COM Port definitions and Device Address
• Ethernet Port Settings
• Installing Modems
Serial Ports (RS-232)
Two serial interface ports, COM1 and COM2, are
standard 9-pin, RS-232, DTE-configured ports. The
front-panel port, COM1, can be used to locally set
and interrogate the relay using a temporary con-
nection to a PC or laptop computer. The second
RS-232 port, COM2, is provided at the rear of the
unit. COM2 is unavailable for communications when
the optional ethernet port is enabled. However, the
Demodulated IRIG-B may still be used through the
COM2 Port when Ethernet is enabled.
Serial Port (RS-485)
COM3 located on the rear terminal block of the
M-3311A is an RS-485, 2-wire connection.
Appendix
B
, Figure B-3 illustrates a 2-wire RS-485 network.
Individual remote addressing also allows for com
-
munications through a serial multidrop network. Up
to 32 relays can be connected using the same 2
wire RS-485 communications line.
Direct Connection
In order for IPScom to communicate with the relay
using direct serial connection, a serial “null modem”
cable is required, with a 9-pin connector (DB9P)
for the system, and an applicable connector for the
computer (usually DB9S or DB25S). Pin-outs for a
null modem adapter are provided in Appendix B,
Communications
.
An optional 10 foot null modem cable (M-0423)
is available from the factory, for direct connection
between a PC and the relay’s front panel COM port,
or the rear COM2 port.
When fabricating communication cables, every
effort should be made to keep cabling as short as
possible. Low capacitance cable is recommended.
The RS-232 standard specifies a maximum cable
length of 50 feet for RS-232 connections. If over 50
feet of cable length is required, other technologies
should be investigated.
Other communication topologies are possible us-
ing the M-3311A Transformer Protection System.
An Application Note, “
Serial Communication with
Beckwith Electric’s Integrated Protection System
Relays” is available from the factory or from our
website at www.beckwithelectric.com.
Device Address
Individual relay Device Addresses should be be-
tween 1 and 255. The default Device Address is 1.
IPScom COM Port Definitions and System’s
Communication Address
To setup the COM Ports and Communication Ad-
dresses perform the following:
NOTE
: Communication must be established with
the target relay for this procedure. The
IPSCom installation and establishing
initial Local communications are covered
in Section 5.6, IPScom Communications
Software Installation, and Section 5.7,
Activating Initial Local Communications.
1.
From the IPScom Main Screen menu
select
Tools/Relay Communication
.
IPScom will display the Setup Comm
Port dialog screen (Figure 4-7).
The System COM Port that is in use will
be indicated at the top of the display.
Figure 4-7 Setup Comm Port Dialog Screen
Summary of Contents for M?3311A
Page 1: ...Instruction Book M 3311A Transformer Protection Relay ...
Page 30: ... 29 M 3311A Transformer Protection Relay This Page Left Intentionally Blank ...
Page 55: ...M 3311A Instruction Book 1 6 This Page Left Intentionally Blank ...
Page 87: ...M 3311A Instruction Book 2 32 This Page Left Intentionally Blank ...
Page 89: ...M 3311A Instruction Book 3 2 Figure 3 2 IPScom Main Screen ...
Page 107: ...M 3311A Instruction Book 3 20 Figure 3 22 Setup System Dialog Screen 2 3 Winding ...
Page 108: ...IPScom 3 3 21 Figure 3 23 Setup System Dialog Screen 4 Winding ...
Page 112: ...IPScom 3 3 25 Figure 3 29 I O Map Screen 4 Winding ...
Page 114: ...IPScom 3 3 27 Figure 3 31 Display All Setpoints Screen 4 Winding ...
Page 119: ...M 3311A Instruction Book 3 32 Figure 3 38 View Sequence of Events Recorder Screen ...
Page 127: ...M 3311A Instruction Book 3 40 This Page Left Intentionally Blank ...
Page 150: ...4 23 System Setup and Setpoints 4 Figure 4 14 Setup Sequence of Events Recorder Dialog Screen ...
Page 163: ...4 36 M 3311A Instruction Book Figure 4 15 IPScom Relay Setup System Dialog Screen 2 3 Winding ...
Page 166: ...4 39 System Setup and Setpoints 4 Figure 4 18 IPScom Selection Screen for Input Settings ...
Page 179: ...4 52 M 3311A Instruction Book Figure 4 28 Example of V Hz Capability and Protection Curves ...
Page 187: ...4 60 M 3311A Instruction Book Figure 4 33 49 Function Overload Curves ...
Page 229: ...4 102 M 3311A Instruction Book Table 4 5 Transformer Connections ...
Page 231: ...4 104 M 3311A Instruction Book Table 4 7 Custom Transformer and CT Configuration ...
Page 243: ...M 3311A Instruction Book 5 6 Figure 5 5 Mounting Dimensions for GE L 2 Cabinet H3 and H4 ...
Page 383: ...A 50 M 3311A Instruction Book This Page Left Intentionally Blank ...
Page 389: ...M 3311A Instruction Book B 6 This Page Left Intentionally Blank ...
Page 393: ...D 2 M 3311A Instruction Book Figure D 1 Volts Hz 24IT Inverse Curve Family 1 Inverse Square ...
Page 394: ...Inverse Time Curves Appendix D D 3 Figure D 2 Volts Hz 24IT Inverse Family Curve 2 ...
Page 395: ...D 4 M 3311A Instruction Book Figure D 3 Volts Hz 24IT Inverse Time Curve Family 3 ...
Page 396: ...Inverse Time Curves Appendix D D 5 Figure D 4 Volts Hz 24IT Inverse Curve Family 4 ...
Page 399: ...D 8 M 3311A Instruction Book Figure D 5 Definite Time Overcurrent Curve ...
Page 400: ...Inverse Time Curves Appendix D D 9 Figure D 6 Inverse Time Overcurrent Curve ...
Page 401: ...D 10 M 3311A Instruction Book Figure D 7 Very Inverse Time Overcurrent Curve ...
Page 402: ...Inverse Time Curves Appendix D D 11 Figure D 8 Extremely Inverse Time Overcurrent Curve ...
Page 439: ...F 28 M 3311A Instruction Book This Page Left Intentionally Blank ...