Maxcess MAGPOWR TSA User manual

222 W. Memorial Road, Oklahoma City, OK 73126-0508
Phone: [phone] Fax: [phone]
www.magpowr.com E-mail: m[email protected]om
INSTRUCTION MANUAL
MODEL TSA
TENSION SENSOR AMPLIFIER
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 2004, all rights reserved.
Periodically there will be updates to this manual. The latest version is available at www.magpowr.com or by calling
1-800-MAGPOWR (624-7697).
1.0 Introduction
The MAGPOWR Model TSA is a Tension Sensor Amplifier. The TSA supplies 10 vdc or
5 vdc excitation for both full bridge or half bridge tension sensors. The signals from the tension
sensors are added together and amplified to produce a 0 to 10 vdc or a
4 to 20 madc output.
2.0 Mounting
The TSA is intended for installation on a vertical panel with a DIN 35 rail, with the wiring
terminals facing down. Figure 1 shows the enclosure dimensions.
Figure 1
Enclosure Dimensions
3.0 Setup
When Magpowr, or other 21 mv tension sensors are used, no setup is necessary. If 500 mv tension
sensors are used, then JP1 and JP2 must be cut (See figure 2). The enclosure may be opened by
inserting a flat blade screwdriver under one of the retaining tabs in the base and lifting the cover
(See figure 3).
850A263-1
10/04 Rev. C
2.30 [58.4 mm]
1.39 [35.2 mm] 3.38 [85.8 mm]
4.13 [105.0 mm]

2
GND
COM METER
SHIELD
0-1mA
SHIELD BLACK -S RED +P GREEN -P WHITE +S
OUTPUT
354768910 11 12 13
L1
14
L2
115/230 VAC
50/60 Hz
Figure 2 Figure 3
Location of JP1 & JP2 Enclosure Top Removal
4.0 Electrical Connections
Figure 4 shows the wiring connections that are required for the basic system. They are:
115/230 vac power cable
Tension Sensor cables
Output cable
Meter cable
Wiring to and from the TSA must be done with double or
reinforced insulation or protective screening which
provides protective separation. All wiring should
comply with the essential requirements of the
appropriate standard(s) and is the responsibility of the
installer.
Route AC power away from sensor wiring. Run all
wiring in shielded cable. Connect shields to the
terminals indicated as “SHIELD”. Maximum shield
length and maximum length of wires outside of the shield Figure 4
is 3 in. (75 mm). Wiring Connections
5.0 Maintenance
The only maintenance that may be required on the TSA is fuse replacement. Replacement of the fuse(s)
requires first removing AC power, then opening the enclosure, which circumvents the enclosure IP rating.
The enclosure may be opened by inserting a flat blade screwdriver under the retaining tabs in the base
(See figure 3).
6.0 Calibration
Use the “SELECT OUTPUT” switch to choose the desired tension reference output. There are two
choices, 0 to 10 vdc or 4 to 20 madc.
Tension reference output calibration is accomplished by two adjustments (ZERO and GAIN). The ZERO
adjustment is used to cancel the weight of the sensing roll. The ZERO adjustment will adjust out a
sensing roll weight of up to 50% of the sensor(s) load rating(s).

3
W
TEMPORARY
WEB
WEIGHT
SENSING ROLL
6.0 Calibration Continued
After suspending a known weight with a temporary web (See figure 5), adjust GAIN until the desired
tension reference output is reached. The maximum load on the sensors must be less than or equal to
the total sensor rating and greater than 1/8 of the total sensor rating. When two sensors are used the
total sensor rating is the combined rating of both sensors (i.e. 100 lb for two 50 lb sensors).
Figure 5
Dead Weight Calibration
7.0 Troubleshooting
PROBLEM DIAGNOSTIC
Cannot ZERO the meter 1) The total weight of the sensor idler roller and shaft must be
less than ½ of total sensor rating. When two sensors are
used this is the combined rating of both (i.e. 100 lb for two
50 lb sensors).
2) Verify “SELECT OUTPUT” switch set for the appropriate
tension reference output.
3) Verify tension sensors cables are connected correctly to the
TSA.
4) Verify JP1 and JP2 are set correctly for the tension sensor(s)
being used.
GAIN adjustment does not
give the desired output
1) Calibration load is greater than the sensor(s) rating.
2) Verify 115/230 vac power select switch is set to the
appropriate voltage.
3) Verify “SELECT OUTPUT” switch set for the appropriate
tension reference output.
4) Verify tension sensors cables connected correctly to the
TSA.

GAIN adjustment does not
give the desired output
(Continued)
5) Verify JP1 and JP2 are set correctly for the tension
sensor
6) The impedance load on the output is not within
specifications
(0 to 10 vdc - 10 kohm min.)
(4 to 20 madc - 500 ohm max. )
8.0 Specifications
Supply Voltage: 115/230vac, +/- 10%, 50/60 Hz, Switch selectable
Fuses: F1, F2 1.6 amp, Littelfuse Part No. 21601.6, or
Wickmann Part No. 19194-053-FS
Enclosure: IP20
Climatic Class: 3K3 (EN60721)
Temperature Range:
Operating: 0º C to 50º C
Storage: -30º C to 80º C
Relative Humidity: 5% to 85%
Pollution Degree: 2 (IEC664-1)
Altitude: 0 to 2000 m
Compatible Residual Current
Device Types: A or B (IEC755)
Worst Case Fault Current: 1.6 amp ac
Sensor Excitation: 5 or 10 vdc, 64 madc maximum
Tension Sensor Input: 0 to 21 mv or 0 to 500 mv, jumper selectable
Outputs:
Tension Reference Output: 0 to 10 vdc
or
4 to 20 madc
Meter Signal: 0 to 1 madc