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7SF/7SC Temperature Controllers
7SF/7SC Temperature Controllers
p
Controllers
ADVANTAGE EZ
Series 7SF and 7SC
1/16 DIN Temperature Controllers
Dual 4 Digit LED Display
Universal Input (6 T/C, RTD, mV, V, mA)
Autotuning
NEMA 4X
100 to 240 Vac Switching Power Supply
Algorithms for Heat or Heat/Cool Control
Up to 2 Independent Alarms Configurable with
Automatic or Manual Reset
Output Turn Off Function
4-20 mA Retransmission (7SC)
The Advantage EZ 1/16 DIN Controllers are configurable autotuning
controllers for applications where heater breakdown, RS-485 com-
munication and 4 digit display are required.
Optional Features
Opto-isolated RS-485 Serial Communiction Inter-
face with 3 Protocols
Instrument Configurable by Keyboard or Through
Serial Link
2 Independent Setpoints Selectable from External
Input Contact
Heater Breakdown Alarm
Heater Breakdown Alarm and Load Current Display
in Engineering Units
DIN Rail Mount
Introduction
The Barber-Colman Series 7 establishes a new class of microprocessor based tempera-
ture controllers. As part of the Series 7 family, the 7SF and 7SC offer expanded feature
sets allowing complete system safety and data collection capabilities. Designed specifi-
cally for equipment manufacturers who need heater breakdown notification or communi-
cations to data acquisition equipment, the 7SF and 7SC offer a variety of standard fea-
tures commonly found as options on our competitors controllers. NEMA 4X faceplates
allow these units to be used in applications where washdowns and dust conditions exist.
These controllers are light and compact (1/16 DIN size). They are easily able to perform in
the most demanding applications with reliable control.
Even operators without skills in temperature process control or knowledge of PID control
parameters, can obtain perfect process control. For the best results in control, simply:
wire the instrument
configure setpoint and alarm thresholds
initiate the autotune function
Also available
with DIN rail
mount 7SF/7SC Temperature Controllers
p
Controllers
7SF Specifications
Case:
ABS grey. Self-extinguishing degree V-0 according to UL-94.
Front Protection:
Designed and tested for IP65 and NEMA 4X for indoor locations (with gasket installed).
Installation:
Panel mounting by means of brackets; or DIN rail.
Rear Terminal Block:
Up to 15 screw terminals, with safety rear cover.
Dimensions:
48 x 48 mm (1.890 x 1.890 in.) according to DIN 43700; 122 mm (4.803 in.) depth.
Weight:
250 grams maximum (1 pound)
Power Supply
Switch Mode. 100 to 240 Vac. 50/60 Hz (+10% to -15% of the nominal value) or
24 Vac/Vdc (
±
10% of the nominal value).
Power Consumption:
8 VA.
Insulation Resistance:
Greater than 100 M according to IEC 348.
Isolation Voltage:
1500 Vrms according to IEC 348.
D/A Conversion:
Dual slope integration.
Noise Immunity:
a) Electrical fast transient/burst requirements:
Severity Level 3 (according to IEC 801-4).
b) Electric discharge requirements:
Severity Level 8 (according to IEC 801-2).
Sampling Time:
- For linear inputs - 250 ms.
- For TC or RTD inputs - 500 ms.
Accuracy:
±
0.2% full scale value @ 25
°
C and nominal power supply voltage.
Common Mode
Rejection Ratio:
120 dB @ 50/60 Hz.
Normal Mode
Rejection Ratio:
60 dB @ 50/60 Hz.
Operating Temperature:
From 0 to 50
°
C.
Storage Temperature:
From -20 to 70
°
C.
Humidity:
From 20% to 85% RH non-condensing.
Protection:
a) WATCH DOG for automatic reset.
b) DIP Switches for configuration and calibration parameters.
Inputs (All inputs are factory calibrated and selectable by front keyboard.)
Thermocouples Type:
J, K, L, R, S and N are keyboard configurable.
Engineering Units:
°
C and
°
F keyboard configurable.
Sensor Break:
Downscale or upscale programmable.
Reference Junction:
Automatic compensation for ambient temperature between 0 and 50
°
C.
Reference Junction Drift:
0.1
°
C/
°
C.
Input Impedance:
Greater than 1 M .
Calibration:
According to IEC 584-1
Standard Ranges:
NOTE: For TC inputs, the minimum span is 300
°
C or 600
°
F, which makes it possible to increase the sensitivity of the
control parameters.
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L
0
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0
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4
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L
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9
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0
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C
J
0
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0
0
4
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0
°
C
J
0
0
0
1
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0
°
C
K
0
.
0
0
4
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t
0
°
C
K
0
0
2
1
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0
°
C
N
0
0
4
1
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t
0
°
C
R
0
6
7
1
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t
0
°
C
S
0
6
7
1
o
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0
°
C
L
0
5
6
1
o
t
0
°
F
J
0
3
8
1
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0
°
F
K
0
9
1
2
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0
°
F
N
0
5
5
2
o
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0
°
F
R
0
0
2
3
o
t
0
°
F
S
0
0
2
3
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t
0
°
F 7SF/7SC Temperature Controllers
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Controllers
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G RTD Input
°
C
°
F
0
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0
0
4
o
t
9
.
9
9
1
-
°
C
0
.
0
0
4
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.
9
9
1
-
°
F
0
0
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2
-
°
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4
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3
3
-
°
F
RTD Type:
Pt 100 3 wire connection.
Calibration:
According to DIN 43760.
Line Resistance:
Max 20 /wire with no appreciable error.
Engineering Units:
°
C and
°
F keyboard configurable.
Sensor Break:
Open sensor detection and one or more open wires. Sensor short circuit detection.
Standard Ranges:
NOTE: For RTD inputs, the minimum span is 100
°
C or 200
°
F, which makes it possible to increase the sensitivity of the
control parameters.
mAdc and Vdc Linear Inputs
mAdc Input (Standard):
0 to 20 mAdc and 4 to 20 mAdc keyboard configurable.
Input Impedance:
Less than 5 .
Vdc Input:
0 to 5 Vdc and 1 to 5 Vdc, configurable. Input impedance greater than 200 K .
0 to 10 Vdc and 2 to 10 Vdc, configurable. Input impedance greater than 400 K .
0 to 60 mVdc and 12 to 60 mV, configurable. Input impedance greater than 1 M .
Read-out:
Keyboard configurable from -1999 to 4000.
Decimal Point:
Configurable in any position
Standard Ranges:
Current Transformer Input for OUT 1 Heater Breakdown Detection
(Optional, 7SF only)
This feature allows measurement of the OUT 1 load current by means of a current transformer and signals an alarm condi-
tion when the current is below a pre-programmed threshold value.
Input Range:
50 mAac.
Scaling:
Configurable from 10 Amps to 100 Amps (with a 1 Amp step).
Resolution:
- for full scale up to 20 Amps: 0.1 Amp.
- for full scale from 21 Amps to 100 Amps: 1 Amp.
Active Period:
- for relay output: NO or NC configurable.
- for SSR output: logic level 1 or 0 configurable.
Minimum On time to
perform the measurement:
50 ms.
NOTE: The heater breakdown detection feature precludes the use of logic inputs and external setpoint selection.
7SF Specifications (continued) 7SF/7SC Temperature Controllers
p
Controllers
Logic Inputs
The 7SF is equipped with a logic input used to select between the main and auxiliary setpoint (SP or SP2). Use an external
contact with a contact rating greater than 0.5 mA, 5Vdc. The instrument needs 100 ms to recognize a contact status
variation.
NOTE: This function excludes the current transformer input (Output 1 heater breakdown alarm).
Setpoints
Two setpoints are available:
- Main Setpoint (SP).
- Auxiliary Setpoint (SP2).
Setpoint Transfer:
Transfer between SP1 and SP2 can be driven by logic input (contact closure). The trans-
fer can be by a step or by a ramp with two different configurable rates of change (ramp up
and ramp down).
Setpoint Limiters:
Setpoint low limit and setpoint high limit are configurable.
Control Action
Algorithm:
PID + Smart AT.
Type:
One (heating) or two (heating/cooling) control outputs.
Proportional Band:
Configurable
- From 1.0% to 100.0% of the input span for process with one control output.
- From 1.5% to 100% of the input span for process with two control outputs.
Setting the PB equal to zero changes the control action to ON/OFF.
Hysteresis (for ON/OFF
control action):
Configurable from 0.1% to 10.0% of the input span.
Integral Time:
Configurable from 20 seconds to 20 minutes or excluded.
Derivative Time:
Configurable from 1 second to 10 minutes or excluded.
Integral Preload:
Configurable:
- for 1 control output, from 0 to 100% of the output range.
- for 2 control outputs, from -100% to +100% of the heating/cooling output range.
Out 1 (heating) Cycle Time:
From 1 to 200 seconds.
AUTO/MANUAL Mode:
Selectable by front pushbutton or logic input.
AUTO/MANUAL Transfer:
Bumpless.
Two Control Outputs (heating/cooling)
Relative Cooling Gain:
Keyboard configurable from 0.20 to 1.00.
Cooling Cycle Time:
From 1 to 200 seconds.
Overlap/Deadband:
Keyboard configurable from -20% (deadband) to +50% (overlap) of the proportional band.
Note:
By setting the proper cooling medium (air, oil or water) during configuration, the instrument will automatically set the
cooling (OUT 2) parameters.
7SF Specifications (continued) 7SF/7SC Temperature Controllers
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Controllers
Control Outputs
Type:
Time Proportioning.
Direct/Reverse Action:
Keyboard configurable.
Output Level Indication: