Machine Parts For Reuse Newsgroup Discussion Forum > Small Size Parts
> Used
> Electrical
> Dallas
> New beckwith digital tapchanger controls m-2001B " "
New beckwith digital tapchanger controls m-2001B " "
transformer and regulator control
provides reliable operation and
Interfaces with conversion front
panels to replace popular industry
Serial communication ports with
several on-board communication
Two active serial communications
ports, through RS-232, RS-485, or
Reverse power detection/operation
Time/date stamping of maximum/
Data logging of metered parameters
Self-test alarm and userprogrammable
Line overcurrent tapchange inhibit
circulating current method, external
LDC with R & X or Z-compensation
Can be configured for various tap
Definite or Inverse Time Delay
Continuous or pulsed outputs
Voltage limits with automatic runback, tap position limits
Both 50 and 60 Hz models available
Digital Tapchanger Control for Transformers and Regulators
M-2001B Digital Tapchanger Control
: Adjustable from 100 V to 135 V in 0.1 V increments.
: Adjustable from 1 V to 6 V in 0.1 V increments.
: R and X compensation. Adjustable from 24 V to +24 V in 1 V increments.
Z compensation available with adjustment of voltage raise from 0 V to +24 V, in increments of 1 V.
: Definite; adjustable from 5 seconds to 120 seconds, in 1 second increments. Inverse; adjustable
from 5 seconds to 120 seconds, in 1 second increments.
: Used to introduce time delay between tap operations when control is in sequential mode;
adjustable from 0 to 10 seconds in 1.0 second increments. Counter input required.
: Continuous or pulsed. Normally, an output (raise or lower) signal is maintained when the
voltage remains outside the band. A pulsed output is programmable from 1 to 5 seconds, in increments of 0.1
Transformer LTC Application: Can be set to ignore or block operation with reverse power.
Single-Phase Regulators: If "keep track" tap position indication is applicable, unit may be set to "Regulate
Reverse". This feature allows separate setpoints and regulation in the reverse direction without the installation
: Adjustable from 0 to +330 in 30 increments.
: The following measured and calculated values are available in real-time:
: Time interval selected as 15, 30, or 60 minutes.
drag-hand values are stored with date and time stamping and are averaged over 32 seconds:
drag-hand values are stored with date and time stamping and are calculated over the demand
time interval (15, 30, or 60 minutes) as selected by the user:
Maximum Load kVA, or MVA (and Power Factor at time of Maximum Load kVA, or MVA)
Line Overcurrent Tapchange Inhibit
: Adjustable from 200 mA to 640 mA of line current for 200 mA CT or 1.0
A to 3.2 A for 1 A CT display and 5.0 A to 16.0 A for 5 A CT display. External auxiliary CT required for 1.0 A and
Voltage Limits, Tap Position Limits, and Runback
: Overvoltage and Undervoltage limits are independently
adjustable from 95 V to 135 V in 0.1 V increments. Upper and lower tap position limits may be set by user, with
tap position knowledge active. An adjustable deadband (above the overvoltage limit) of 1 V to 4 V is available,
which can be used to set the runback limit.
: Three independent steps, each adjustable from 0% to 10% in 0.1% increments of the
External Inhibit of Auto Tapchange
: Blocks automatic tapchanger operation in response to external contact
Sequential or Non-Sequential Operation
: Non-sequential operation resets the time delay upon momentary
external contact closure at the non-sequential input.
Circulating Current: The circulating current method is standard, and may be implemented using separate
balancing equipment such as the Beckwith Electric M-0115A Parallel Balancing Module or with external
VAR : The VAR method is optional. When specified, VAR method may be implemented using separate
balancing equipment such as the M-0115A Balancing Module.
For both methods of paralleling, overcurrent protection, such as that provided by the M-0127 Overcurrent
: VT correction from 10 V to +10 V in 0.1 V increments.
Self-Test Alarm Output Contacts
: Alerts operator to loss of power or malfunction of control.
User-Programmable Alarm Contacts
: Alerts operator to one or more of the following system conditions:
Communications Block Invoked, Block Raise Voltage Limit Exceeded, Block Lower Voltage Limit Exceeded,
Voltage Reduction (any step) Invoked, Reverse Power Flow Condition Detected, Line Current Limit Exceeded,
Tap Block Raise in Effect, and Tap Block Lower in Effect.
Transformer LTC: The optional M-2025B Current Loop Interface Module receives a signal from a position
transducer and outputs to the M-2001B through a bottom port.
Single-Phase Regulators: In most applications, tap position information can be maintained by means of an
: A software counter increments by one or two counts (user-selected) per close/open cam
switch operation, and may be preset by the user.
: A second software counter, similar to the operations counter, which may be
: Nominal 120 V ac, 60 Hz (50 Hz optional); operates properly from 90 V ac to 140 V ac.
If set at 60 Hz, the operating system frequency is from 55 to 65 Hz; if set at 50 Hz, the operating system
frequency is from 45 to 55 Hz. The burden imposed on the input is 8 VA or less. The unit should be powered
from a voltage transformer connected at the controlled voltage bus. The unit will withstand twice the voltage
input for one second and four times the voltage input for one cycle.
: Nominal 120 V ac to 240 V ac, at up to 6 A as required by the load, with no wiring changes
: Line drop compensation is provided by a current transformer input with a 0.2 A full scale
rating. A Beckwith Electric model M-0121 (5 A to 0.2 A) or M-0169 (5 A or 8.66 A to 0.2 A) Auxiliary Current
Transformer is available when required. The burden imposed on the current source is 0.03 VA or less at
200 mA. The input will withstand 400 mA for two hours and 4 A for 1 second.
: Parallel operation of regulators or transformers is accommodated by a current
transformer input with a 0.2 A full scale rating. The burden imposed on the current source is 0.03 VA or less at
: capable of switching 6 A at 120 Vac to 240 V ac motor power.
capable of switching 6 A at 120 Vac to 240 V ac motor power.
Menu-driven access to all functions by way of three buttons and a two-line alphanumeric display. There are two
programmable passwords available to provide various levels of access to the control functions.
Front panel LED indicators show the following control conditions: Out-of-Band
One normally open programmable contact and one normally closed self-test
alarm contact; capable of switching 3 A at 120 V ac.
0.7% in accordance with ANSI/IEEE C57.15-1986 defining control accuracy of operation.
The communication ports provide access to all features, including metering, software updates, and programming
of all functions. This is accomplished via modem or direct serial connection from any IBM PC-compatible
personal computer running the M-2029 TapTalk
Communications Software package or SCADA communications
software. COM1 (top) is available with RS-232, RS-485, or Fiber Optics. COM2 is an RS-232 front port for
local communications with TapTalk BECO 2200 and for software updates.
: The following standard protocols are included in COM1: BECO 2200, BECO 2179, Cooper 2179
and DNP3.0. UCA2.0 protocol is available as an option. COM2 uses BECO 2200 for local communications.
Communication Ports and Format
: The control comes with two RS-232 communications ports, COM1 and
COM2. COM2 is located in the front of the unit. COM1 is located on top of the unit, and, as an option, can have
two additional interfaces: RS-485, and fiber optic communications. Only one COMM port is active at a time.
Communications Via Direct Connection
: TapTalk supports direct communication with a Beckwith Electric
M-2001B Digital Tapchanger Control via a serial
null modem cable with a 9-pin connector (DB9P) for the
control, and the applicable connector (usually DB9S or DB25S) for the PC, or Fiber Optic communication using
ST standard or two-wire RS-485.
http:// /tapchangers/m2001/SP/M-2001B-SP-07MC1%20(09-03)%20screen.pdf
