Product data

June 2012
CWGFC
6 www.EmersonProcess.com/Remote
In addition, you may enter the R
o
, A, and B coefficients of a
custom calibrated RTD, another platinum standard or a
different material (Nickel, Balco, or Copper).
During the RTD calibration, you are able to set the
coefficients, restore the factory default for these
coefficients, and calibrate the internal reference resistor.
Thermowell Options for RTD
For new installations, or those lacking a thermowell, you can
choose one of three lengths of thermowell for the RTD.
I/O Configuration
Note that the base I/O (2 DI/PI) is located on the
Processor/Main Electronics board. Also, the RTD input and
MVT (Multivariable sensor) interface are located on the
Processor/Main Electronics board.
Additional I/O circuitry is located on an optional I/O card
that plugs in to the Processor/Main Electronics card. You can
choose between the minimum I/O configuration of 2 DI/DO,
4 DI, 2 DO and 2 HSC/DI or an expanded version, which
additionally includes 3 AI or 3 AI and 1 AO point.
What is the difference between a pulse input (PI) and high-
speed counter input (HSC)? The HSC circuitry includes
debounce, which is useful with form ‘C’ relays, such as those
in some pulser devices. A PI does not include the debounce
circuitry and is, therefore, not recommended with relays.
Note that in the HSC inputs, the debounce can be
enabled/disabled by the user and they are shipped disabled.
We recommend that users select the 3 AI / 1 AO
configuration if use of analog I/O is anticipated in the future
because addition of the points requires a change-out of the
I/O card due to hazardous area certification requirements
that can be done only at the factory.
Polyphaser Option For Radio
If a radio is specified, you can select whether or not a
Polyphaser surge protector is included. Emerson always
recommends the Polyphaser.
Modem or Radio Option
Radios are standard models, which are widely available from
Freewave and MDS. Note that modems and radios are all
allocated to the network port, COM2, and are, thus,
mutually exclusive.
Since some users prefer to procure the radios separately,
Emerson offers radio-ready configurations for each of the
models. Radio-ready models include literally everything
except for the radio. The mounting bracket as well as all
cables and connections are in place. The user or
integrator/installer must simply mount the radio to the
bracket and make connections.
It is important to match the radio-ready configuration with
the specific radio you expect to install because cables and
connections for the antenna, RS 232 port, and power vary
by radio model.
Modem Specifications
The auto-dial/auto-answer modem is the same Cermetek
model that is used in the TeleFlow products. This modem
provides a sleep mode that conserves power while allowing
it to wake up when a call comes in.
 Function: Provides PSTN (Public Switched Telephone
Network) communications.
 Operating Modes: Sync or Async. 2-wire switched
network, Half or Full Duplex.
 Line Type: Two-wire loop start lines.
 Modem Configuration: “AT” based commands.
 Data Rate: V.32 bis — 9600 bps, V.32 — 9600 bps,
V.22 bis — 2400 bps, V.22 — 1200 bps or 600 bps,
V.21 — 300 bps, Bell 103J — 300 bps,
Bell 212A — 1200 bps.
 Telephone Functions: Dialling and answering by AT
commands. Automatic answering is also
programmable.
 Approvals: Telephone - FCC Part 68 (also suitable for
approval within Canada).
 Trans. Output Levels: -10 dBm fixed (USA) or 0 to15
dBm adjustable (firmware dependent).
 PSTN Arrangements: Loop Start arrangement
(transmission output does not exceed -10 dBm). Allows
connection to any voice telephone jack.
 Isolation: Data Access Arrangement (DAA) with 1000
Vac (Modem to PSTN).
 Sleep Mode Current: 0.5 mA (max) @ 12 V (Input
Voltage); 1.0 mA (Max) @ 6 V (Input Voltage)
 Surge Capability: Withstand surge of 100 A with 10 x
160 microsecond waveform.
 Temperature: Operating Range: -40º to +60ºC (-40º to
140ºF); Storage Range: -40º to +85ºC (-40º to 185ºF)
 Relative Humidity: 15% to 90%, non-condensing
Radio Specifications
For specifications on the radios, please refer to the Emerson
Process Management web site,
www.EmersonProcess.com/Remote, where individual data
sheets are available in pdf format.
Radio Power Consumption
NOTE: When conserving power, ControlWave GFC turns
power to the radios completely off instead of
operating them in the sleep mode.
Freewave FGR Spread Spectrum Radio Figures at 12 Vdc:
 Receive: 75 mA
 Transmit: 500 mA
 Idle: 20 mA