Partlow MIC 1400 User manual

MIC 1400
1/4 DIN MICROBASED CONTROLLER
OPERATORS
MANUAL
FORM 3665
EDITION 1
© OCT. 1995
PRICE $10.00
Brand

MIC 1400 Manual Edition 1
2
Information in this installation, wiring, and operation manual is subject to change
without notice. One manual is provided with each instrument at the time of ship-
ment. Extra copies are available at the price published on the front cover.
Copyright © Oct. 1995, The Partlow Corporation, all rights reserved. No part of
this publication may be reproduced, transmitted, transcribed or stored in a retrieval
system, or translated into any language in any form by any means without the
written permission of the Partlow Corporation.
This is the First Edition of the MIC 1400 manual. It was written and produced
entirely on a desk-top-publishing system. Disk versions are available by written
request to the Partlow Publications Department.
We are glad you decided to open this manual. It is written so that you can take full
advantage of the features of your new MIC 1400 process controller.
NOTE:
It is strongly recommended that Partlow equipped
applications incorporate a high or low limit protective device
which will shut down the equipment at a preset process
condition in order to preclude possible damage to property
or products.

MIC 1400 ManualEdition 1 3
Table of Contents
Section 1 - General Page
1.1 Product Description 5
Section 2 - Installation & Wiring
2.1 Installation & Wiring 7
2.2 Preparations for Wiring 9
2.3 Input Connections 14
2.4 Output Connections 16
Section 3 - Configuration & Operation
3.1 Operation 19
3.2 Configuration 24
3.3 Pre-Tune Mode 31
3.4 Auto-Tune Mode 31
3.5 Manual Tuning Method 32
Section 4 - Control Capability
4.1 Control Capability 34
4.2 Control Responses 34
4.3 Direct/Reverse Operation of Control Outputs 35
4.4 On-Off Control 35
4.5 Time Proportioning Control 36
4.6 Current Proportioning Control 37
4.7 Setpoint Adjustments 38
Appendices
A - Glossary of Terms 39
Figure A-1 Proportional Band & Deadband/Overlap 49
B - Board Layout - Jumper positioning 50
Figure B-1 PCB Positions 50
Figure B-2 Output 2/Output 3 Removal 51
Figure B-3 CPU PWA 52
Figure B-4 PSU PWA with Relay or SSR Out.1 53
Figure B-5 PSU PWA with DC Output 1 54
Figure B-6 Option PWA 55
(Continued on next page)

MIC 1400 Manual Edition 1
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Figures & Tables
Figure 1-1 Controller Display Illustration 6
Figure 2-1 Panel Cut-Out Dimensions 7
Figure 2-2 Main Dimensions 8
Figure 2-3 Panel Mounting the controller 8
Figure 2-4 Noise Suppression 11
Figure 2-5 Noise Suppression 12
Figure 2-6 Wiring Label 13
Figure 2-7 ACPower 14
Figure 2-8 Thermocouple Input 14
Figure 2-9 RTD Input 14
Figure 2-10 Volt, mV mADC Input 15
Figure 2-11 Remote Digital Connections 15
Figure 2-12 Relay Output 1 16
Figure 2-13 SSR Driver Output 1 16
Figure 2-14 mADC Output 1 16
Figure 2-15 Relay Output 2 17
Figure 2-16 SSR Driver Output 2 17
Figure 2-17 mADC Output 2 17
Figure 2-18 Relay Output 3 18
Figure 2-19 SSR Driver Output 3 18
Figure 2-20 mADC Output 3 18
Figure 4-1 Proportional Bandwidth Effect on Output 37
Table 3-1 Enable Mode Configuration Procedures 24
Table 3-2 Program Mode Configuration Procedures 25
Table 3-3 Tune Mode Configuration Procedures 27
Appendices cont.
C - Hardware Definition Code 56
D - Input Range Codes 58
E - Specifications 60
F - Model Number Hardware Matrix 66
G - Software Reference Sheet 67

MIC 1400 ManualEdition 1 5
Product Description 1.1
1.1.1 GENERAL
This instrument is a microprocessor based single loop controller capable of
measuring, displaying and controlling temperature, pressure, flow, and level
from a variety of inputs. Most outputs are easily tuned using the instrument
Pre-Tune and Auto-Tune functions.
Control functions, alarm settings and other parameters are easily entered
through the front keypad. E
2
Technology (100 year life) protects against
data loss during AC power outages.
The input is user configurable to directly connect to either thermocouple,
RTD, mVDC, VDC or mADC inputs. The instrument can operate from a
90-264 VAC, 50/60 HZ power supply, or optional 24V AC/DC power supply.
1.1.2 DISPLAYS
Each instrument is provided with dual displays and status indicators as
shown in Figure 1-1. The upper display displays the value of the process
variable. The lower display displays the setpoint value. Status indication is
as shown, see Figure 1-1, page 6.
1.1.3 CONTROL
The instrument can be programmed for on-off, time proportioning, or cur-
rent proportioning control implementations depending on the model num-
ber. A second control output is an available option. Proportional control
implementations are provided with fully programmable PID parameters.
1.1.4 ALARMS
Alarm indication is standard on all instruments. Up to two alarm outputs
are possible. Alarm type may be set as Process Direct or Reverse (high or
low), Deviation Direct or Reverse (above or below setpoint), Deviation
Band Type (closed or open within band), or Loop Reverse or Direct. Alarm
status is indicated by LED.

MIC 1400 Manual Edition 1
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FIGURE 1-1
Keys and Indicators
AUTO
1.1.5 PROCESS VARIABLE/SETPOINT VALUE
RE-TRANSMISSION OUTPUT
If the instrument is specified with this option, this output may be scaled over
any desired range and re-transmitted.

MIC 1400 ManualEdition 1 7
Installation and Wiring 2.1
Electrical code requirements and safety standards should be observed and
installation performed by qualified personnel.
The electronic components of the instrument may be removed from the
housing during installation. To remove the components, grip the side
edges of the front panel and pull the instrument forward. During re-installa-
tion, the vertically mounted circuit boards should be properly aligned in the
housing.
Ensure that the instrument is correctly orientated. A stop will operate if an
attempt is made to insert the instrument incorrectly.
Recommended panel opening sizes are illustrated in Figure 2-1. After the
opening is properly cut, insert the instrument into the panel opening. En-
sure that the panel gasket is not distorted and that the instrument is posi-
tioned squarely against the panel. Slide the mounting clamp into place on
the instrument (see Figure 2-3, page 8) and push it forward until it is firmly
in contact with the rear face of the mounting panel.
Note: The mounting clamp tongues may engage either on the
sides or the top/bottom of the instrument housing. Therefore, when
installing several instruments side-by-side in one cut out, use the
ratchets on the top/bottom faces.
FIGURE 2-1
Panel Cut-Out Dimensions
92 mm ±0.8
(3.62”±.031)
PANEL
CUTOUT
SIZE
92 mm ±0.8
(3.62”±.031)

MIC 1400 Manual Edition 1
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FIGURE 2-2
Main Dimensions
FIGURE 2-3
Panel Mounting the Controller
Mounting Clamp
Controller Housing
Tongues on mounting clamp engage in
ratchet slots on controller housing
96 mm
(3.78 in.)
96 mm
(3.78 in)
100 mm (3.94 in.)
Side View
10 mm (0.39 in.)

MIC 1400 ManualEdition 1 9
Preparation for Wiring 2.2
2.2.1 WIRING GUIDELINES
Electrical noise is a phenomenon typical of industrial environments. The
following are guidelines that must be followed to minimize the effect of
noise upon any instrumentation.
2.2.1.1 INSTALLATION CONSIDERATIONS
Listed below are some of the common sources of electrical noise in the
industrial environment:
• Ignition Transformers
• Arc Welders
• Mechanical contact relay(s)
• Solenoids
Before using any instrument near the device listed, the instructions below
should be followed:
1. If the instrument is to be mounted in the same panel as any of the
listed devices, separate them by the largest distance possible. For
maximum electrical noise reduction, the noise generating devices
should be mounted in a separate enclosure.
2. If possible, eliminate mechanical contact relay(s) and replace with
solid state relays. If a mechanical relay being powered by an
instrument output device cannot be replaced, a solid state relay can
be used to isolate the instrument.
3. A separate isolation transformer to feed only instrumentation should
be considered. The transformer can isolate the instrument from noise
found on the AC power input.
4. If the instrument is being installed on existing equipment, the wiring in
the area should be checked to insure that good wiring practices have
been followed.

MIC 1400 Manual Edition 1
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2.2.1.2 AC POWER WIRING
Neutral (For 115 VAC)
It is good practice to assure that the AC neutral is at or near ground poten-
tial. To verify this, a voltmeter check between neutral and ground should be
done. On the AC range, the reading should not be more than 50 millivolts.
If it is greater than this amount, the secondary of this AC transformer sup-
plying the instrument should be checked by an electrician. A proper neutral
will help ensure maximum performance from the instrument.
2.2.1.3 WIRE ISOLATION
Four voltage levels of input and output wiring may be used with the unit:
• Analog input or output (i.e. thermocouple, RTD, VDC, mVDC, or mADC)
• SPDT Relays
• SSR driver outputs
• AC power
The only wires that should run together are those of the same category. If
they need to be run parallel with any of the other lines, maintain a minimum
6 inch space between the wires. If wires must cross each other, do so at
90 degrees. This will minimize the contact with each other and reduces
“cross talk”. “Cross Talk” is due to the EMF (Electro Magnetic Flux) emitted
by a wire as current passes through it. This EMF can be picked up by
other wires running in the same bundle or conduit.
In applications where a High Voltage Transformer is used (i.e. ignition sys-
tems) the secondary of the transformer should be isolated from all other
cables.
This instrument has been designed to operate in noisy environments, how-
ever, in some cases even with proper wiring it may be necessary to sup-
press the noise at its source.
2.2.1.4 USE OF SHIELDED CABLE
Shielded cable helps eliminate electrical noise being induced on the wires.
All analog signals should be run with shielded cable. Connection lead
length should be kept as short as possible, keeping the wires protected by
the shielding. The shield should be grounded at one end only. The pre-
ferred grounding location is the sensor, transmitter or transducer.

MIC 1400 ManualEdition 1 11
2.2.1.5 NOISE SUPPRESSION AT THE SOURCE
Usually when good wiring practices are followed no further noise protection
is necessary. Sometimes in severe electrical environments, the amount of
noise is so great that it has to be suppressed at the source. Many manu-
facturers of relays, contactors, etc. supply “surge suppressors” which
mount on the noise source.
For those devices that do not have surge suppressors supplied, RC (resis-
tance-capacitance) networks and/or MOV (metal oxide varistors) may be
added.
Inductive Coils - MOV’s are recommended for transient suppression in
inductive coils connected in parallel and as close as possible to the coil.
See Figure 2-4. Additional protection may be provided by adding an RC
network across the MOV.
FIGURE 2-4
Contacts - Arcing may occur across contacts when the contact opens and
closes. This results in electrical noise as well as damage to the contacts.
Connecting a RC network properly sized can eliminate this arc.
For circuits up to 3 amps, a combination of a 47 ohm resistor and 0.1
microfarad capacitor (1000 volts) is recommended. For circuits from 3 to 5
amps, connect 2 of these in parallel. See Figure 2-5, page 12.
0.5
mfd
1000V
220
ohms Coil
115V 1/4W
230V 1W

MIC 1400 Manual Edition 1
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FIGURE 2-5
2.2.2 SENSOR PLACEMENT (Thermocouple or RTD)
Two wire RTD’s should be used only with lead lengths less than 10 feet.
If the temperature probe is to be subjected to corrosive or abrasive condi-
tions, it should be protected by the appropriate thermowell. The probe
should be positioned to reflect true process temperature:
In liquid media - the most agitated area
In air - the best circulated area
MOV
Inductive
Coil
R C

MIC 1400 ManualEdition 1 13
FIGURE 2-6
Wiring Label
No external
connections
to be made
to these
terminals
RTD
3
2
1
9
4
5
6
7
8
21
20
19
18
17
16
15
14
13
-+
SSR/DC
N/OC
N/CRelay
OUTPUT 3
11 1210
24 23 22
-
+
SSR/DC
N/O CN/C
Relay
OUTPUT 2
-
+
Thermocouple
-
+
Linear (V/mV)
+
-
INPUT
Linear (mA)
-
+
MAINS (LINE)
SUPPLY
L
N
RS485
SERIAL
COMMS.
B
A
COM
SSR/DC
N/C
N/O
C
Relay
OUTPUT 1
-
+
24V 24V
AC DC

MIC 1400 Manual Edition 1
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Input Connections 2.3
In general, all wiring connections are made to the instrument after it is
installed. Avoid Electrical Shock. AC power wiring must not be connected
to the source distribution panel until all wiring connection procedures are
completed.
FIGURE 2-7
Main Supply
Connect the AC line voltage, hot and neutral, to terminals 13 and 14 re-
spectively as illustrated below. Connect the positive to terminal 14 and
negative to terminal 13 for 24 V DC supply.
FIGURE 2-8
Thermocouple (T/C) Input
Make thermocouple connections as illustrated below. Connect the positive
leg of the thermocouple to terminal 2 and the negative leg to terminal 3.
FIGURE 2-9
RTD Input
Make RTD connections as illustrated below. For a three wire RTD, connect
the resistive leg of the RTD to terminal 1 and the common legs to terminals
2 and 3. For a two wire RTD, connect one leg to terminal 2 and the other
leg to terminal 3 as shown below. A jumper wire supplied by the customer
must be installed between terminals 2 and 3. Input conditioning jumper
must be positioned correctly (see Appendix B) and Hardware Definition
Code must be correct (see Appendix C).
13
14
L
N
-
+
3
2
-
+
Thermocouple

MIC 1400 ManualEdition 1 15
3
2
1
RTD
3
2
1
-
+
Linear (V/mV)
+
-
Linear (mA)
4
16
A
B
17
18 COM
FIGURE 2-10
Volt, mV Input
Make volt and millivolt connections as shown below. Terminal 2 is positive
and terminal 3 is negative. Input conditioning jumper must be positioned
correctly (see Appendix B) and Hardware Definition Code must be correct
(see Appendix C).
mADC Input
Make mADC connections as shown below. Terminal 4 is positive and ter-
minal 1 is negative. Input conditioning jumper must be positioned correctly
(see Appendix B) and Hardware Definition Code must be correct (see Ap-
pendix C).
FIGURE 2-11
Remote Digital Communications - RS485
Make digital communication connections as illustrated below.

MIC 1400 Manual Edition 1
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19 N/C
N/O
C
Relay
20
21
19 -
+
SSR
20
21
19 -
+
DC
20
21
Output Connections 2.4
FIGURE 2-12
Relay Output 1
Connections are made to Output 1 relay as illustrated below. The contacts
are rated at 2 amp resistive, 120/240 VAC.
FIGURE 2-13
SSR Driver Output 1
Connections are made to Output 1 SSR Driver as illustrated below. The
solid state relay driver is a non-isolated 0-4 VDC nominal signal. Output
impedance is 250 ohms.
FIGURE 2-14
mADC Output 1
Make connections for DC Output 1 as illustrated below.

MIC 1400 ManualEdition 1 17
24 23 22
N/O CN/C
Relay
24 23 22
-
+
SSR
24 23 22
-
+DC
FIGURE 2-15
Relay Output 2
Connections are made to Output 2 relay as illustrated below. The contacts
are rated at 2 amp resistive, 120/240 VAC.
FIGURE 2-16
SSR Driver Output 2
Connections are made to Output 2 SSR Driver as illustrated below. The
solid state relay driver is a non-isolated 0-4 VDC nominal signal. Output
impedance is 250 ohms.
FIGURE 2-17
mADC Output 2
Make connections for DC Output 2 as illustrated below.

MIC 1400 Manual Edition 1
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10 11 12
N/OCN/C Relay
10 11 12
-+
SSR
10 11 12
-+
DC
FIGURE 2-18
Relay Output 3
Connections are made to Output 3 relay as illustrated below. The contacts
are rated at 2 amp resistive, 120/240 VAC.
FIGURE 2-19
SSR Driver Output 3
Connections are made to Output 3 SSR Driver as illustrated below. The
solid state relay driver is a non-isolated 0-4 VDC nominal signal. Output
impedance is 250 ohms.
FIGURE 2-20
mADC Output 3 (Recorder Output Only)
Make connections for DC output 3 as illustrated below.

MIC 1400 ManualEdition 1 19
Operation 3.1
3.1.1 POWER UP PROCEDURE
Verify all electrical connections have been properly made before applying
power to the instrument.
If the instrument is being powered for the first time, it may be desirable to
disconnect the controller output connections. The instrument will be into
control following the power up sequence and the output(s) may turn ON.
During power up, a self-test procedure is initiated during which all LED
segments in the two front panel displays appear and all LED indicators are
ON. When the self-test procedure is complete, the instrument reverts to
normal operation.
Note: A delay of about 3 seconds, when power is first applied, will be
seen before the displays light up.
3.1.2 KEYPAD OPERATION
AUTO/MANUALKEY
This key is used to:
1. Enter the Auto/Manual mode and vice versa.
2. Used to activate the Auto Tune mode.
3. Used to confirm a change in the Program mode.
SCROLL KEY
This key is used to:
1. Select adjustment of the ramping setpoint, if enabled.
2. Select a parameter to be viewed or adjusted.
3. Display enabled modes of operation.
4. Display a mode parameter value.
5. Advance display from a parameter value to the next parameter code.
6. Activate the Pre-tune mode.
7. With the DOWN key to view the current Hardware Definition Code
setting.

MIC 1400 Manual Edition 1
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Loop Alarm Status
L = Energized
Blank = De-energized
Alarm 1 Status
1 = Energized
Blank = De-energized
Alarm 2 Status
2 = Energized
Blank = De-energized
UP KEY
This key is used to:
1. Increase the displayed parameter value.
2. Increase setpoint.
3. With the DOWN key to enter Pre and Auto Tune mode.
DOWN KEY
This key is used to:
1. Decrease the displayed parameter value.
2. Decrease setpoint.
3. With the UP key to enter the Pre andAuto Tune mode.
4. With the SCROLL key to view the current Hardware Definition Code
setting.
3.1.3 DISPLAYS
During configuration the upper display shows the parameter setting. The
lower display shows the parameter code for the currently selected param-
eter. During operation, the upper display shows the value of the process
variable. The lower display shows the setpoint value.
3.1.3.1 ALARM STATUS DISPLAY*
The user may view the status of the instrument's alarm(s) by depressing
the SCROLL key until the lower display shows the legend "ALSt" and the
upper display shows the alarm status in the following format:
*This display is available only if one or more of the alarms is/are energized.
When "ALSt" is seen in the lower display, to enter the Program or Tune
modes, press the UP key with "ALSt" displayed, then the SCROLL key to
ProgramorTune.