MODEL RFMP - MINIATURE ELECTRONIC 5-DIGIT PROCESS METER
THREE SELECTABLE D.C. RANGES
0 to 10 V, 0(4) to 20 mA, 0 to 50 mA
MINIMUM AND MAXIMUM DISPLAY CAPTURE
LCD, REFLECTIVE OR RED/GREEN LED BACKLIGHTING
0.48" (12.2 mm) HIGH DIGITS
OPTIONAL SETPOINT OUTPUT CARD
OPTIONAL SERIAL COMMUNICATION CARD (RS232 or RS485)
OPTIONAL USB PROGRAMMING CARD
OPERATES FROM 9 TO 28 VDC POWER SOURCE
FRONT PANEL PROGRAMMABLE
U
R
C
US LISTED
L
IND. CONT. EQ.
51EB
DISPLAY COLOR CHANGE CAPABILITY AT SETPOINT OUTPUT
NEMA 4X/IP65 SEALED FRONT BEZEL
GENERAL DESCRIPTION
The FLEX MINI Series provides the user the ultimate in flexibility, from its
complete user programming to the optional setpoint control and communication
capability. The FLEX MINI accepts a DC voltage or current input signal and
provides a display in the desired unit of measure. The meter also features
minimum and maximum display capture, display offset, units indicator, and
programmable user input. The display can be toggled either manually or
automatically between the selected displays.
The FLEX MINI display has 0.48" (12.2 mm) high digits. The LCD is
available in two versions, reflective or red/green backlight. The backlight
version is user selectable for the desired color and also has variable display
intensity.
The capability of the FLEX MINI can be easily expanded with the addition
of option cards. The setpoint output cards are field installable with programmable
setpoints. Serial communications capability for RS232 or RS485 can be added
with a serial option card.
The FLEX MINI can be powered from an optional Veeder Root Micro-Line/
Sensor Power Supply (MLPS), which attaches directly to the back of a FLEX
MINI. The MLPS is powered from 85 to 250 VAC and provides up to 400 mA
to drive the unit and sensors.
INPUT
The FLEX MINI is a DC Process meter. It features voltage and current input
ranges, that are selected by the user via a programming jumper and software
input range selection. The ranges consist of the following: 0 to 10 V, 0(4) to 20
mA, or 0 to 50 mA. Users should select the appropriate voltage range that
DIMENSIONS In inches (mm)
Note: Recommended minimum clearance (behind the panel) for mounting clip installation is 2.15" (54.6) H x 3.00" (76.2) W.
covers their maximum input.
SAFETY SUMMARY
All safety related regulations, local codes and instructions that appear in this
literature or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
Do not use this meter to directly command motors, valves, or other actuators
not equipped with safeguards. To do so can be potentially harmful to persons or
equipment in the event of a fault to the meter.
CAUTION: Risk of Danger.
Read complete instructions prior to
installationand operation of the unit.
CAUTION: Risk of electric shock.
SEL
2.95 (74.9)
RST
1.54 (39.1)
.15 (3.8)
.13 (3.3)
+.024
1.30
-.000
+6
(33 )
-0
1.71
(43.4)
1.29 (32.8)
2.68
(68 )
+.025
-.000
+8
-0
1
orderinG inforMation
TYPEMODEL NO.DESCRIPTIONPART NUMBER
FLEX MINIFLEX MINI
FLEX MINISingle Relay Option CardRFMRL00
Optional Plug-in Cards
AccessoriesFLEX MINI+12 VDC Micro-Line Power Supply, 85 to 250 VAC source, 400 mA max outRFMPS1
FLEX MINIDual Sinking Open Collector Output CardRFMSK00
FLEX MINI
FLEX MINIUSB Programming Card RFMCOMUSB
Process Meter with Reflective DisplayRFMP00R
Process Meter with Backlight DisplayRFMP00
RS485 Serial Communications CardRFMCOMM
RS232 Serial Communications CardRFMCOMM2
General Meter SpecificationS
1. DISPLAY: 5 digit LCD 0.48" (12.2 mm) high digits
RFMP00R: Reflective LCD with full viewing angle
RFMP00: Transmissive LCD with selectable red or green LED backlight,
viewing angle optimized. Display color change capability with output state
when using an output module.
2. POWER: Input voltage range is +9 to +28 VDC with short circuit and input
polarity protection. Must use an VR model RFMPS or an NEC Class 2 or
Limited Power Source (LPS) rated power supply.
MODEL
NO.
RFMPOOR---10 mA40 mA
RFMPOORed (max intensity)85 mA115 mA
RFMPOOGreen (max intensity)95 mA125 mA
DISPLAY COLOR
INPUT CURRENT
@ 9 VDC WITHOUT
RFMRLOO
INPUT CURRENT
@ 9 VDC WITH
RFMRLOO
3. INPUT RANGES: Jumper Selectable
0 to 10 V, 0(4) to 20 mA, 0 to 50 mA
4. SENSOR INPUTS:
INPUT
RANGE
20 / 50 mA 0.1% of span
10 VDC 0.1% of span
ACCURACY
@23 °C, less
than 85% RH
INPUT
IMPEDANCE
10 Ω
538 KΩ
MAX INPUT
SIGNAL
150 mA1 µA70 ppm / °C
RESOLUTION
30 V1 mV70 ppm / °C
TEMP.
COEFFICIENT
5. OVERRANGE RATINGS, PROTECTION & INDICATION:
9 to 28 VDC power circuit is not isolated from the signal circuit.
10. MEMORY: Nonvolatile E2PROM memory retains all programming
parameters and max/min values when power is removed.
11. ENVIRONMENTAL CONDITIONS:
Operating Temperature Range for RFMP00R: -35 to 75 °C
Operating Temperature Range for RFMP00 depends on display color
and intensity level as per below:
Red Display1 & 2-35 to 75 °C
Green Display1 & 2-35 to 75 °C
Storage Temperature: -35 to 85 °C
Operating and Storage Humidity: 0 to 85% max. relative humidity (non-
condensing)
Vibration to IEC 68-2-6: Operational 5-500 Hz, 5 g
Shock to IEC 68-2-27: Operational 30 g
Altitude: Up to 2000 meters
12. CERTIFICATIONS AND COMPLIANCES:
CE Approved
EN 61326-1 Immunity to Industrial Locations
Emission EN 55011 Class A
IEC/EN 61010-1
UL Recognized Component: File #E179259
UL Listed: File #E137808
Type 4X Enclosure rating (Face only)
IP65 Enclosure rating (Face only)
IP20 Enclosure rating (Rear of unit)
Refer to EMC Installation Guidelines section of the bulletin for additional
information.
13. CONSTRUCTION: This unit is rated for NEMA 4X/IP65 requirements for
outdoor use. Installation Category I, Pollution Degree 2. High impact plastic
case with clear viewing window. Panel gasket and mounting clip included.
14. WEIGHT: 3.2 oz (100 g)
INTENSITY LEVELTEMPERATURE
3-35 to 70 °C
4-35 to 60 °C
5-35 to 50 °C
3-35 to 65 °C
4-35 to 50 °C
5-35 to 35 °C
2
optional pluG-in cardS
PANEL
GASKET
BEZEL
PANEL
MOUNTING SCREW
NUT FASTENER
MOUNTING CLIP
ADDING OPTION CARDS
The FLEX MINI meters can be fitted with optional output cards and/or serial
communications cards. The details for the plug-in cards can be reviewed in the
specification section below. The plug-in cards, that are sold separately,can be
installed initially or at a later date.
WARNING: Disconnect all power to the unit before installing
Plug-in card.
Note: Measurement errors may occur if signal input common is shared with
another circuit common (ie, serial common, Dual Sinking Output option card,
or Power Supply common) on multiple units.
SINGLE RELAY CARD
Type: Single FORM-C relay
Isolation To Sensor & User Input Commons: 1400 Vrms for 1 min.
Type: Non-isolated switched DC, N Channel open drain MOSFET
Current Rating: 100 mA max.
V
: 0.7 V @ 100 mA
DS ON
1.0 inStallinGthe Meter
INSTALLATION
The meter meets NEMA 4X/IP65 requirements when properly installed. The
unit is intended to be mounted into an enclosed panel. Prepare the panel cutout
to the dimensions shown. Remove the panel latch from the unit. Slide the panel
gasket over the rear of the unit to the back of the bezel.
The unit should be installed fully assembled. Insert
the unit into the panel cutout.
While holding the unit in place, push the panel
latch over the rear of the unit so that the tabs of the
panel latch engage in the slots on the case. The
panel latch should be engaged in the farthest
V
: 30 VDC
DS MAX
Offstate Leakage Current: 0.5 mA max.
RS485 SERIAL COMMUNICATIONS CARD
Type: RS485 multi-point balanced interface (non-isolated)
Baud Rate: 300 to 38.4k
Data Format: 7/8 bits; odd, even, or no parity
Bus Address: 0 to 99; max 32 meters per line
Transmit Delay: Selectable (refer to RFMCOMM bulletin)
RS232 SERIAL COMMUNICATIONS CARD
Type: RS232 half duplex (non-isolated)
Baud Rate: 300 to 38.4k
Data Format: 7/8 bits; odd, even, or no parity
USB PROGRAMMING CARD
Type: USB virtual comms port
Connection: Type B
Baud Rate: 300 to 38.4k
Unit Address: 0 to 99
forward slot possible. To achieve a proper seal, tighten the latch screws evenly
until the unit is snug in the panel (Torque to approx. 28 to 36 in-oz [0.202 to 0.26
N-m]). Do not over-tighten the screws.
INSTALLATION ENVIRONMENT
The unit should be installed in a location that does not exceed the operating
temperature and provides good air circulation. Placing the unit near devices that
generate excessive heat should be avoided.
The bezel should only be cleaned with a soft cloth and neutral soap product.
Do NOT use solvents. Continuous exposure to direct sunlight may accelerate the
aging process of the bezel.
Do not use tools of any kind (screwdrivers, pens, pencils, etc.) to operate the
keypad of the unit.
2.0 SettinGthe JuMperS
INPUT RANGE JUMPER
This jumper is used to select the proper input range. The input range selected
in programming must match the jumper setting. Select a range that is high
enough to accommodate the maximum input signal to avoid overloads. To
access the jumper, remove the rear cover of the meter.
Warning: Exposed line voltage exists on the circuit boards.
Remove all power to the meter and load circuits before accessing
inside of the meter.
REMOVING THE REAR COVER
To remove the rear cover, locate the cover locking tab below the 2nd and 3rd
input terminals. To release the tab, insert a small, flat blade screwdriver between
the tab and the plastic wall below the terminals. Inserting the screwdriver will
provide enough pressure to release the tab locks. To replace the cover, align the
cover with the input terminals and press down until the cover snaps into place.
+.025
2.68
-.000
+.8
(68 )
-.0
INPUT RANGE JUMPER
MAIN CIRCUIT
BOARD
3
+.024
1.30
-.000
+.6
(33 )
-.0
10 V
20/50 mA
INPUT RANGE
JUMPER LOCATION
3.0 inStallinG pluG-in cardS
The Plug-in cards are separately purchased option cards that perform specific
functions. The cards plug into the main circuit board of the meter
Range Jumpers
Setpoint Card
Comms or
Programming
Card
Locking Tab
4.0 WirinGthe Meter
WIRING OVERVIEW
Electrical connections are made via screw-clamp terminals located on the
back of the meter. All conductors should conform to the meter’s voltage and
current ratings. All cabling should conform to appropriate standards of good
installation, local codes and regulations. It is recommended that the power
supplied to the meter (DC or AC) be protected by a fuse or circuit breaker.
Strip the wire, leaving approximately 0.3" (7.5 mm) bare lead exposed
(stranded wires should be tinned with solder.) Insert the lead under the correct
screw-clamp terminal and tighten until the wire is secure. (Pull wire to verify
tightness.) Each terminal can accept up to one #14 AWG (2.55 mm) wire, two
#18 AWG (1.02 mm), or four #20 AWG (0.61 mm).
EMC INSTALLATION GUIDELINES
Although this meter is designed with a high degree of immunity to ElectroMagnetic Interference (EMI), proper installation and wiring methods must be
followed to ensure compatibility in each application. The type of the electrical
noise, source or coupling method into the meter may be different for various
installations. The meter becomes more immune to EMI with fewer I/O
connections. Cable length, routing, and shield termination are very important
and can mean the difference between a successful or troublesome installation.
Listed below are some EMC guidelines for successful installation in an
industrial environment.
1. The meter should be mounted in a metal enclosure, which is properly
connected to protective earth.
2. Use shielded (screened) cables for all Signal and Control inputs. The shield
(screen) pigtail connection should be made as short as possible. The
connection point for the shield depends somewhat upon the application.
Listed below are the recommended methods of connecting the shield, in order
of their effectiveness.
a. Connect the shield only at the panel where the unit is mounted to earth
ground (protective earth).
b. Connect the shield to earth ground at both ends of the cable, usually when
the noise source frequency is above 1 MHz.
CAUTION: The Plug-in cards and main circuit board contain static
sensitive components. Before handling the cards, discharge
static charges from your body by touching a grounded bare
metal object. Ideally, handle the cards at a static controlled
clean workstation. Also, only handle the cards by the edges.
Dirt, oil or other contaminants that may contact the cards can
adversely affect circuit operation.
REMOVING THE REAR COVER
To remove the rear cover, locate the cover locking tab below the 2nd and 3rd
input terminals. To release the tab, insert a small, flat blade screwdriver between
the tab and the plastic wall below the terminals. Inserting the screwdriver will
provide enough pressure to release the tab locks. To replace the cover, align the
cover with the input terminals and press down until the cover snaps into place.
c. Connect the shield to common of the meter and leave the other end of the
shield unconnected and insulated from earth ground.
3. Never run Signal or Control cables in the same conduit or raceway with AC
power lines, conductors feeding motors, solenoids, SCR controls, and
heaters, etc. The cables should be ran in metal conduit that is properly
grounded. This is especially useful in applications where cable runs are long
and portable two-way radios are used in close proximity or if the installation
is near a commercial radio transmitter.
4. Signal or Control cables within an enclosure should be routed as far as possible
from contactors, control relays, transformers, and other noisy components.
5. In extremely high EMI environments, the use of external EMI suppression
devices, such as ferrite suppression cores, is effective. Install them on Signal
and Control cables as close to the unit as possible. Loop the cable through the
core several times or use multiple cores on each cable for additional protection.
Install line filters on the power input cable to the unit to suppress power line
interference. Install them near the power entry point of the enclosure. The
following EMI suppression devices (or equivalent) are recommended:
Ferrite Suppression Cores for signal and control cables: