Appendix B – Communications
B–1
The M‑3311A Transformer Protection Relay incor‑
porates three serial ports for intelligent, digital com‑
munication with external devices. Equipment such
as RTUs, data concentrators, modem, or computers
can be interfaced for direct, on‑line real time data
acquisition and control.
Generally, all data available to the operator through
the front panel of the relay, with the optional M‑3931
HMI module is accessible remotely through the
BECO 2200 data exchange protocol. This protocol
document and the BECO 2200 relay database
specified protocol document are available from the
factory or our website at www.beckwithelectric.com.
The S‑3300 IPScom
®
Communication Software
package has been supplied for communication to
any IBM compatible computer running under Win‑
dows 95™ or higher.
The protocol implements serial, byte oriented,
asynchronous communication, and can be used
to fulfill the following communications functions:
•
Real time monitoring of line status.
•
Interrogation and modification of setpoints.
•
Downloading of recorded oscillograph
data.
•
Reconfiguration of functions.
NOTE:
The following restrictions apply for MOD‑
BUS protocol use:
1. MODBUS protocol is not supported on
COM1
2. Parity is supported on
COM2
and
COM3
only, valid selections are 8,N,1; 8,O,1;
8,E,1; 8,N,2; 8,O,2; 8,E,2.
3.
ASCII mode is not supported (RTU only)
4. Standard baud rates from 300 to 9600
are supported.
B
Appendix – Communications
5. Only the following MODBUS commands
are supported:
a. Read holding register (function 03)
b. Read input register (function 04)
c. Force single coil (function 05)
d. Preset single register (function 06)
For detailed information about communications,
refer to Chapter 3,
IPScom Operation.
DNP Configuration Parameters
M‑3311A relays support DNP through the rear
RS‑232 (COM2) & RS‑485 (COM3) communication
ports. These ports support baud rates 300, 600,
1200, 2400, 4800, 9600 (default baud rate is 9600).
See Figure A‑3, Communication Data & Unit Setup,
for sequence of DNP setup screens.
M‑3311 Slave Address
DNP3 Slave IED address range is from 0 to 65519.
Address 65535 (hex FFFF) is used to broadcast
messages to all devices. The communication ad‑
dress can be set through the HMI (front panel;
optional).
The DNP3 device profile document, including the
point list, is available from the factory or our website,
www.beckwithelectric.com.
The following restrictions apply for DNP3 protocol
use:
• DNP3 is not supported on COM1.
• Parity is not supported.
• DNP3 does not support oscillograph re
‑
cord downloading.
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 ...