M‑3311A Instruction Book
B–2
The communication database profile in M‑3311A
using DNP3 protocol is grouped into five object
types:
1.
Single Bit Binary Inputs (Status)
:
(object 01, variation 01) These are con‑
sidered as class 0 data.
2.
16 Bit Analog Output Block /Status
(setpoints)
: (object 40, variation 01,
variation 02/object 41, variation 01,
variation 02) Used to write and read all
setpoints and system setup.
3.
Control Relay Output Block (direct
control)
: (object 12, variation 01) Used
to write all configuration points.
4.
16 Bit Analog Inputs
: (object 30, varia‑
tion 02) Used to represent all demand
metering, target information, and control
information of the relay.
5.
16 Bit Binary Counters
: (object 20,
variation 02, variation 06) Used to
represent all counters. Can be used to
reset the counters using freeze and clear
function code.
6.
Static (class 0) Data
: (object 60, varia‑
tion 01) Used to represent all binary
inputs, demand metering, target and
control information, and counters. All
points in the M‑3311A relay are of static
type, meaning that an integrity poll will
dump all data to the querying RTU.
Communication Ports
The relay has both front and rear panel RS‑232
ports and a rear RS‑485 port. The front and rear
panel RS‑232 ports are 9‑pin (DB9S) connector
configured as DTE (Data Terminal Equipment) per
the EIA‑232D standard. Signals are defined in Table
B‑1, Communication Port Signals .
The 2‑wire RS‑485 port is assigned to the rear panel
terminal block pins 3 (–) and 4 (+).
Each communication port may be configured to
operate at any of the standard baud rates (300,
600, 1200, 2400, 4800, and 9600). The RS‑485
port shares the same baud rate with COM 2 (for
COM1 see Section 5.4, Circuit Board Switches
and Jumpers).
While the digital communication ports do include
some ESD (Electrostatic Discharge) protection
circuitry, they are excluded from passing ANSI/IEEE
C37.90.1‑1989. Beckwith Electric recommends the
use of RS‑232/485 to fiber optic converters to avoid
any question of surge‑withstand capability or ground
potential rise.
A null modem cable is also shown in Figure B‑1,
Null Modem Cable: M‑0423, if direct connection to
a PC (personal computer) is desired.
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 ...