Maxcess MAGPOWR DTM User manual

Digital Tension Meter
Instruction Manual
www.maxcessintl.com
DTM
MI 850A329 1 G
Page 1 of 4
All of the information herein is the exclusive proprietary
property of Maxcess International and is disclosed with
the understanding that it will be retained in confidence
and will neither be duplicated nor copied in whole or in
part nor be used for any purpose other than for which
disclosed.
Copyright 2008, all rights reserved. Periodically there will
be updates to this manual. The latest version is available
on our website or by calling your regional office listed on
the back page of this publication.
CAUTION: Read complete CAUTION:
instructions prior to installation Risk of electric
and operation of the unit. shock.
UL Recognized Component
File #E308360
LCD WITH RED BACKLIGHTING
0 to 1 mADC Input
0.6 INCH (15.2 mm) HIGH LCD DIGITS
BUILT-IN SCALING PROVIDED
AUTO ZEROING CIRCUIT
SELECTABLE DECIMAL POINTS
WIRE CONNECTIONS MADE VIASCREW CLAMP TYPE
TERMINALS
FITS DIN STANDARD CUT-OUT 2.68"
(68 mm) x 1.30" (33 mm)
NEMA 4X/IP65 SEALED FRONT PANEL BEZEL
9 TO 28 VDC POWERED
1.0 DESCRIPTION
The DTM Digital Tension Meter is designed and manufactured
using the latest technology for a high quality, compact, afford-
able instrument for use in industrial environments. Each unit has
a 3-1/2-digit LCD display with 0.6 inch (15.2 mm) high digits and
a DIP switch selectable decimal point.
The units are constructed of a lightweight, high impact plastic
case with a clear viewing window. The sealed front panel meets
NEMA 4X/IP65 specifications for wash-down and/or dusty
environments, when properly installed.
2.0 SAFETY SUMMARY
All safety related regulations, local codes and instructions that
appear in the manual 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.
3.0 SPECIFICATIONS
1. DISPLAY: 3-1/2-digit (-1999 to 1999), 0.6" (15.2 mm) high
digits. Minus (-) sign is displayed when current is negative.
2. DECIMAL POINTS: DIP switch selectable decimal points
allow the display to be read in tenths, hundredths or
thousandths.
3. POWER REQUIREMENTS: 9 to 28 VDC @ 35 Ma typ.,
50 mA max. Above 26 VDC, derate operating temperature
to 50°C.
4. INPUT RANGES: ±1.000 mADC
5. ACCURACY: (@ 23°C, less than 85% RH) ±(0.1% + 1 digit)
6. OVERRANGE RATINGS, PROTECTION & INDICATION:
9 to 28 VDC power circuit is not isolated from the signal
circuit.
Max Input Current: 10mA
Overrange Indication: Overrange is indicated by a "1"
displayed in the most significant digit and the blanking of the
three least significant digits.
7. READING RATE: 2.5 readings per second
8. RESPONSE TIME: 1.5 seconds to settle for a step change
9. NORMAL MODE REJECTION: 60 dB 50/60 Hz
10.INPUT IMPEDANCE: 200 Ω
11.CERTIFICATIONS AND COMPLIANCES:
SAFETY
UL Recognized Component, File # E308360, UL61010A-1, CSA
C22.2 No. 61010-1
Recognized to U.S. and Canadian requirements under the
Component
Recognition Program of Underwriters Laboratories, Inc.
Type 4X Enclosure rating (Face only), UL50
Issued by Underwriters Laboratories, Inc.
IEC 61010-1, EN 61010-1: Safety requirements for electrical
equipment for measurement, control, and laboratory use, Part 1.
IP65 Enclosure rating (Face only), IEC 529

www.maxcessintl.com
DTM
MI 850A329 1 G
Page 2 of 4
3.0 SPECIFICATIONS (cont)
12.ENVIRONMENTAL CONDITIONS:
Operating Temperature: 0° to 60°C (above 50°C, derate
backlight operating voltage to 26 VDC maximum).
Storage Temperature: -40° to 80°C
Operating and Storage Humidity: 85% max relative
humidity (non-condensing) from 0 to 60°C.
Temperature Coefficient: 100 PPM/°C
Altitude: Up to 2000 meters.
13.CONSTRUCTION: High impact plastic case with clear
viewing window. (Panel gasket and mounting clip included.)
This unit is rated for NEMA 4X/IP65 indoor use. Installation
Category I, Pollution Degree 2
14.WEIGHT:3.3 oz. (93.5 g)
15.REQUIRED CONDITIONS TO MEET UL RECOGNIZED
COMPONENT LISTING: The equipment is considered:
Panel-mountable, Installation Category I, Pollution Degree
2, permanently connected (field wiring)
1. The device should be used within its Recognized ratings as
specified above.
Input - 9 to 28 VDC
Signal - 1.000 mA DC
Ambient - 0°C to 60°C (above 50°C, derate backlight operating
voltage to 26 VDC maximum)
2. The device should be mounted in the intended manner in an
enclosure having adequate strength and thickness with
acceptable spacings being provided.
3. The spacings from the exposed live-metal parts to the
enclosure wall should be in accordance with the requirements
for the overall equipment.
4. The terminals are suitable for factory wiring only.
5. These devices have been tested with an elevated ambient of
50°C to 75°C.
6. The device has been evaluated for Nema Type 4X/IP65
enclosure rating for the face, mounted in a tightly fitting cutout.
7. These devices have been evaluated for double insulation
between the terminals and the face plate.
16. ELECTROMAGNETIC COMPATIBILITY
Immunity to EN 50082-2
Electrostatic discharge EN 61000-4-2 Level 2; 4 Kv contact
Level 3; 8 Kv air
Electromagnetic EN 61000-4-3 Level 3; 10 V/m 1
RF fields 80 MHz - 1 GHz
Fast transients EN 61000-4-4 Level 4; 2 Kv I/O
(bursts) Level 3; 2 Kv power
RF conducted EN 61000-4-6 Level 3; 10 V/rms 2
Interference 150 KHz - 80 MHz
Power frequency EN 61000-4-8 Level 4; 30 A/m
magnetic fields
Simulation of ENV50204 Level 3; 10 V/m
cordless telephone 900 MHz ± 5 MHz
200 Hz, 50% duty cycle
Emissions to EN 50081-2
RF interference EN 55011 Enclosure class A
Power mains class A
Notes:
1. Self-recoverable loss of performance during EMI disturbance at
10 V/m. Process signal may deviate during EMI disturbance.
For operation without loss of performance:
Unit is mounted in a metal enclosure (Buckeye SM7013-0 or
equivalent)
I/O and power cables are routed in metal conduit connected to
earth ground.
2. Self-recoverable loss of performance during EMI disturbance at
10Vrms. Process signal may deviate during EMI disturbance.
For operation without loss of performance:
Install power line filter RLC#LFIL0000 or equivalent at the unit.
Refer to the EMC Installation Guidelines section of this bulletin
for additional information.

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DTM
MI 850A329 1 G
Page 3 of 4
EMC Installation Guidelines
Although this unit 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 electrical noise, source or coupling
method into the unit may be different for various installations.
Cable length, routing and shield termination are very important
and can mean the difference between a successful or a trouble-
some installation. Listed below are some EMC guidelines for
successful installation in an industrial environment.
1. The unit 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.
c. Connect the shield to common of the unit 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
run 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 away 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:
Fair-Rite # 0443167251 (RLC #FCOR0000)
TDK # ZCAT3035-1330A
Steward #28B2029-0A0
Line Filters for input power cables:
Schaffner # FN610-1/07 (RLC #LFIL0000)
Schaffner # FN670-1.8/07
Corcom #1VR3
Note:Reference manufacturer’s instructions
when installing a line filter.
6. Long cable runs are more susceptible to EMI pickup than short
cable runs. Therefore, keep cable runs as short as possible.
5.0 WIRING CONNECTIONS
The electrical connections are made via screw-clamp terminals
located on the back of the unit. When wiring the unit, use the
label to identify the wire position with the proper function. All
conductors should meet voltage and current ratings for each
terminal. Also cabling should conform to appropriate standards
of good installation, local codes and regulations. It is recom-
mended that power supplied to the unit be protected by a fuse
or circuit breaker. Strip the wire, leaving approximately 1/4"
bare wire exposed (stranded wires should be tinned with
solder). Insert the wire into the screw-clamp terminal and
tighten the screw until the wire is clamped tightly. Each terminal
can accept up to two #14 AWG wires.
6.0 DECIMAL POINT SELECTION
The DTM Digital Tension Meter can be set-up to read in 10ths,
100ths, or 1000ths. The decimal point position is DIP switch
selectable for one of three locations. If all the DIP switches are
set to the “OFF” position, then NO decimal point will appear in
the display. The DIP switches are located at the rear of the unit.
7.0 DTM SIGNAL INPUT
The SCALE DIP switch (S1) and the Scaling Potentiometer
are used to scale the display to the desired maximum tension
indication. The Scale switch should be left in the “ON” position
for use as a tension meter.
When the power supply is floating (unreferenced) to the desired
measurement points, the (-) signal input and the power supply
common should be connected. If the power supply is not
floating (referenced), the common mode voltage between the
(-) signal input and power supply common terminal must not be
greater than 1.0 V peak. A common mode voltage higher than
1.0 V peak will result in a measurement error.
The Calibration Potentiometer has been set at the factory and
should not be adjusted unless the unit is being re-calibrated
with an accurate current source.
CAUTION: The Maximum Current of 10 mA must
not be exceeded or the unit may be damaged.
(See Specifications).
Figure 3 –DTM Signal Input
Figure 2 –DTM Installation Dimensions and Panel Cutout

8.0 METER SCALING
The Digital Tension Meter display can be scaled to almost any
lower numerical value. Setting the Scale switch to the “ON”
position enables the Scale Potentiometer, which is used to
scale the unit. The Scale potentiometer can be set to divide the
reading by a division factor between 1 and 13.
EXAMPLE: The DTM Tension Meter has been connected to
a Spyder meter output to measure tension. The Spyder has
been calibrated to 100 pounds maximum tension. Apply 100
pounds to the load cells. Set the DTM Scale switch, S1, to
"ON". Use the scale potentiometer to adjust the display
reading until the DTM display shows "1000". Set decimal
point switches, S3 and S4, to "OFF" and switch S2 to "ON".
The display will now show "100.0".
Figure 4 –DTM Meter Scaling
9.0 TYPICAL MEASUREMENT APPLICATIONS
The DTM meter may be used to display the value of the meter
output, 0 to 1mA, signal from MAGPOWR tension controls and
amplifiers. The following table provides the terminals numbers
of all the MAGPOWR controls which provide a 0 to 1 mA meter
output.
Figure 5 –DTM Measurement Application
MAGPOWR PRODUCTS WITH 0-1 mA METER OUTPUTS
Product
TERMINALS
Usage
Negative
Positive
Cygnus®
TB4.6
TB4.5
Tension
Spyder Plus
34
33
Tension
VERSATEC®
TB3.4
TB3.2
Output Percent
DLCA
22
21
Tension
DTR65
3
4
Tension
TSA
8
9
Tension
PS90
7
6
Output Percent
PS24
7
6
Output Percent
DFC90
7
6
Output Percent
DFCA
6
5
Output Percent
Table 1 –DTM Product Compatibility
0 to 10mA
Meter Output
Tension Control/Amplifier
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