Ogden ETR-901 User manual

INSTRUCTION
MANUAL
MANUAL NO. 17
48mm, 1/16 DIN Solid State Temperature
Controller - Relay Output - Solid State
Output - For Heating -
Model Series: ETR-901, ETR-902, ETR-905
ETR-901 ETR-902 ETR-905
All temperature controls in this series are made to fit
into panel cut-outs which measure 125⁄32” (45mm)
square. A minimum of 4” (102mm) in depth is required
for electrical clearances of rear terminal connections.
The following specifications are common to all models:
INPUT
Thermocouple (T/C): Type K, J. Specified on
Control Label.
RTD: PT 100 ohm DIN (=
.00385) or JIS (=
.00392) Two or Three-Wire.
Cold Junction Automatic
Compensation:
Input Break Protection: Built-in, upscale on open
sensor and output off.
Input Impedance: 10M ohm.
Common Mode
Rejection (CMR): CMRR 120 dB, Min.
Normal Mode
Rejection (NMR): NMRR 60 dB, Min. (60Hz)
CONTROL OUTPUT
Relay–Heating: SPDT relay, 3 amps
maximum resistive load at
120V/240VAC, 24VDC.
Optional: 3-32VDC: For control of solid state
relay.
CONTROL MODES
On-Off: Hysteresis: 5.0% of scale
symmetrically above and
below the set point.
Proportional: Proportional Band fixed at
5% of scale. Standard
relay cycle time, 20
seconds. 1 second for SSR
controls.On ETR-905,
manual reset is 4% of
scale, externally adjustable.
INDICATION
Output: “Red”LED, heater on.
“Green”LED, heater off.
SET POINT
Resolution: ETR-901, 902: 0.2% of
SPAN.
ETR-905: least significant
digit.
Accuracy: ETR-901, 902: 0.2% of
SPAN.
ETR-905: least significant
digit.

2
1-25/32"
(45mm)
1-25/32"
(45mm)
Panel Cutout Panel
3 3/8"
(86mm)
3 3/4"
(95mm)
Mounting Bracket
SPADE TONGUE
CONNECTOR FOR
NO. 6 STUD 3/8"
5/16"
9/16"
20 Ga. Wire
Mounting Dimensions Lead Termination
MANUAL RESET ADJUSTMENT
(Applies to the ETR-905 only.)
When the process stabilizes, approximately one half
hour after adjusting set point, an adjustment in “reset”
may also be necessary. Start with the reset adjustment
pointing to zero. If the temperature indication stabilizes
above the set point temperature, then adjust the reset
to the “minus”side. If the temperature indication
stabilizes below the set point temperature, then adjust
to the “plus”side. By turning this adjustment once or
more, the indicated temperature should eventually
match the set point temperature. It is very important to
wait approximately 15 minutes after each adjustment to
allow the system to stabilize.
WIRING
All wiring should conform to local and national codes:
Following Diagrams for ETR-901 and ETR-902
Models:
(Do not operate 120 volt controls on 240 volts.)
Diagram 1: For 120VAC operation and relay output.
An external magnetic contactor must be
used if the heater load exceeds 360
watts.
Diagram 2: For 120VAC operation and 3-32VDC
output. For use with solid-state relay
for heater control. Solid-state relays
can be single or three-phase.
Following Diagrams for ETR-905 Model:
Diagram 3: For 90-264VAC operation and relay
output. An external magnetic contactor
must be used if the heater load
exceeds 3 amps.
Diagram 4: For 90-264VAC operation and 3-32VDC
output. For use with a solid-state relay
for heater control. Solid-state relays
can be single or three-phase.
NOTE: The use of motor starters in place of magnetic
contactors should be avoided. They have very large
inductive loads that can damage the controller’s relay.
POWER
Rating: ETR-901 and 902 models
110/220VAC NOT field
selectable ±15%, 50/60Hz.
ETR-905 model 90-
264VAC. 24V AC/DC
models available on special
order.
Consumption: Less than 3VA.
ENVIRONMENTAL & PHYSICAL
Operating Temperature: 10°to 125°F (-12 to 52°C).
Humidity: 10 to 90% RH (non-
condensing).
Insulation: 20M ohm Min, (5000VDC).
Breakdown: 2000VAC, 50/60Hz,
1 minute.
Vibration: 10 - 55Hz, Amplitude
1.0mm.
Shock: 660 ft./S2(20g).
Weight: 9 oz. (250 grams)
DIMENSIONS H 17⁄8”(48mm)
W 17⁄8”(48mm)
D 33⁄4”(95mm)
Depth behind panel 33⁄8”
(86mm)
Panel Cutout: 125⁄32”sq. (45mm sq.)
DIN Case: Plastic, full plug-in
construction, with screw
terminals on rear,
adjustable brackets for
panel mounting.
MOUNTING
When mounting the instrument, it is important the
control remains within the ambient temperature range
of 10 to 125°F. Mounting it in any position is permissi-
ble. After inserting the control into the panel, secure it
with the two mounting brackets provided with each unit.

The ETR-901 and ETR-902 must be used with the line
voltage specified. They are not interchangeable from
one line voltage to another. The ETR-905 has
universal line voltage capabilities from 90-264VAC.
When wiring the thermocouple, check the thermocou-
ple and extension wire (compensating cable) to make
sure they conform to the appropriate thermocouple
type specified by the instrument. Extension wires must
be the same alloy and polarity as the thermocouple.
The total lead resistance should not exceed 100 ohms
for accurate measurements. One hundred ohms of
lead resistance will introduce a 1°F (0.5°C) error.
For wiring 3 wire RTD (Resistance Temperature
Detectors), all leads connecting to the controller must
be the same gauge and composition to assure effective
lead resistance compensation. If the RTD is a 3-wire
device, install the two common wires of the RTD to
terminals 4 and 5. If a two wire RTD is to be used,
install a jumper between terminals 4 and 5.
Dangerous voltages are sometimes present in this
instrument. Before installation or beginning any trouble
shooting procedures, the power to all equipment must
be switched off and locked out. Units suspected of
being faulty must be disconnected and removed to a
properly equipped workshop for testing and repair.
Component replacement and internal adjustments must
be made by qualified maintenance personnel only.
To help minimize the possibility of fire or shock haz-
ards, do not expose this instrument to rain or excessive
moisture. This control cannot be used in hazardous
locations as defined in Articles 500 and 505 of the
National Electric Code.
Do not use this instrument in areas subject to
hazardous conditions such as excessive shock,
vibration, dirt, moisture, corrosive gases or oil. The
ambient temperature of the areas should not exceed
the maximum rating.
Wiring Precautions:
•Before wiring, verify the label for control model
number and options. Switch off the power when
checking.
•Care must be taken to ensure that maximum voltage
ratings are not exceeded.
•It is recommended that power to these instruments
be protected by fuses or circuit breakers rated at the
minimum value possible.
•All units should be installed inside a suitably
grounded metal enclosure to prevent live parts being
accessible to human hands and metal tools.
•All wiring must conform to appropriate standards of
good practice and local and national codes and
regulations. Wiring must be suitable for voltage,
current and temperature ratings of the system.
•Both solderless terminals or “stripped”leads as
specified below can be used for power leads. Only
“stripped”leads should be used for thermocouple
connections to prevent compensation and resistance
errors.
•Take care not to over-tighten the terminal screws.
•Unused control terminals should not be used as
jumper points as they may be internally connected,
causing damage to the unit.
GENERAL OPERATION
“OUT” Pilot Lamp Indication:
Adjust the set point to the desired temperature. The
“OUT”lamp will display a red color. This indicates the
relay (or SSR) is closed and the control is calling for
heat. When the process is within the control’s propor-
tional band (20°), the lamp will cycle from red to green
with the heater(s). The relay (or SSR) is in the “open”
position when the lamp indicates a green color. The
digital display on the ETR-905 indicates the actual
process temperature as measured at the location of the
thermocouple or RTD sensor. Note: The control will
not cycle if it is configured as “on-off”.
Operation of HI and LO indication lamps on Model
ETR-902:
These lamps compare the actual process temperature
to the control set point. The lamps blink on and off if
the process temperature is more than 10% of the scale
from the set point. Since the standard temperature
range is 50-850°F, 10% equals 40°below (LO lamp) or
40°above (HI lamp) the set point. If the lamps are
solid, then the process termperature is within 10%
(+ - 40°). Both lamps are off if the temperature is
within 1% (+ - 4°) of the set point. Also note the
diagram below:
CALIBRATION INSTRUCTIONS
Calibration is accomplished by using the four poten-
tiometers located on the bottom of the right-hand circuit
board. The control is opened by unlatching the clamps
located on the top and bottom of the control. The
control should be allowed to warm up for at least 1/2
hour before checking the calibration. The purpose of
the potentiometers is as follows:
VR1 . . . . .Low scale calibration
VR4 . . . . .High scale calibration (ETR-905 only)
VR2 . . . . .Low scale switching point
VR3 . . . . .High scale switching point
The “reset”adjustment must be set to 0 before calibra-
tion. VR1 and VR4 have a slight effect on each other
so you should calibrate low scale and high scale at
least three times each.
WARNING!
WARNING!
3
CAUTION!
LO-
Blinking HI-
Blinking
LO-
Solid HI-
Solid
4°4°
OFF
8°
80°
SET POINT
50°F850°F

TROUBLESHOOTING
Experience has proven that many control problems are
not caused by a defective instrument. See below for
some of the common causes of failures:
Line wires are improperly connected.
No voltage between line terminals
Incorrect voltage between line terminals.
Connections to terminals are open, missing or loose.
Thermocouple (or RTD) is open at tip.
Thermocouple (or RTD) lead is broken.
Shorted thermocouple (or RTD) leads.
Short across terminals.
Open or shorted heater circuit.
Open coil in external contactor.
Return Control to:
OGDEN MANUFACTURING CO.
ATTN: Repair Department
64 West Seegers Road
Arlington Heights, IL 60005
Telephone: [phone] •FAX: [phone]
OGDEN and ETR are registered trademarks of Ogden Manufacturing Co.
Specifications subject to change without notice.
© Ogden Manufacturing Co. 2000
MARCA REGISTRADA
Burned out line fuses.
Defective line switches.
Burned out contactor.
Defective circuit breakers.
If these points have been checked and the controller still
does not function, it is suggested that the instrument be
returned for inspection.
Do not attempt to make repairs. Also, it is advisable to
use adequate packing materials to prevent damage in
shipment.
Printed in U.S.A. 3/01
1
2
3
4
5
6
7
8
9
10
+
-
(Red)
T/C
B
B
A
3 - Wire
RTD
•
oo
o
o
120VAC
5A Fuse Hot
Heater–
If less than 3A
Contactor Coil–
If more than 3A
C
N.O.
N.C.
1
2
3
4
5
6
7
8
9
10
+
(Red)
T/C
B
B
A
3 - Wire
RTD
•
oo
o
o
120VAC
5A Fuse Hot
12
3
4+
Solid State
Relay
oo
Heater Power
Heater Fuse Heater(s)
+
–
–
1
2
3
4
5
6
7
8
9
10
+
-
(Red)
T/C
B
B
A
3 - Wire
RTD
•
oo
o
o
90-260VAC
5A Fuse Hot
Heater–
If less than 3A
Contactor Coil–
If more than 3A
C
N.O.
N.C.
1
2
3
4
5
6
7
8
9
10
+
(Red)
T/C
B
B
A
3 - Wire
RTD
•
oo
o
o
90-260VAC
5A Fuse Hot
12
3
4+
Solid State
Relay
oo
Heater Power
Heater Fuse Heater(s)
+
–
–
DIAGRAM 1
120V Operation for Heating
with Relay Output
ETR-901/902
NOTE: Other voltages can be used if the control was specified and labeled thus.
DIAGRAM 2
120V Operation for Solid-state
Relay Output
ETR-901/902
DIAGRAM 3
90-264V Operation for Heating
with Relay Output
ETR-905
DIAGRAM 4
90-264V Operation for Solid-state
Relay Output
ETR-905
Failure of devices, such as the thermocouple-RTD sensor, heater output relay or temperature control
can result in severe damage to a product while in process, melting of the heater or a damaging fire.
An over-temperature protection device must be installed in your process that will remove all power from the heating
circuit if the above failure occurs. We recommend that this device be classified as a safety control and carry U.L.,
CSA or FM listing or certification. Failure to install high-limit temperature control protection where a potential hazard
exists, could result in damage to equipment and property, and fatal injury to personnel.
WARNING!
NOTE: Other voltages can be used if the control was specified and labeled thus.