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Installation, Wiring, Operation Manual
ONE AND TWO PEN CIRCULAR CHART RECORDER
Form AIC 3382
Edition 2 © December 1996
ACR 710 2
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TABLE OF CONTENTS
SECTION 1 - GENERAL
PAGE NUMBER
1.1 Product Description
5
SECTION 2 - INSTALLATION & WIRING
2.1 Installation & Wiring
7
2.2 Unpacking
7
2.3 Location
7
2.4 Mounting
7
2.5 Preparation for Wiring
8
2.6 Wiring Connections
13
SECTION 3 - CONFIGURATION
3.1 Configuration (Set Up)
18
3.2 Configuration/Jumper Positioning
19
3.3 Operation Summary
19
3.4 Start up Procedure
20
3.5 Front Panel Operation
21
SECTION 4 - SERVICE
4.1 Service
33
4.2 Changing Charts
33
4.3 Changing Pens
33
4.4 Calibration
34
4.5 Test Mode
39
4.6 Troubleshooting and Diagnostics
43
APPENDICES
A - Board Layouts
A-1 Processor Board
50
A-2 SPST Relay/SSR Driver Output Board
51
A-3 SPDT Relay/SSR Driver Output Board
52
A-4 Current Output Board
53
B - Glossary
54
C - Model Number Hardware Matrix Details
55
D - Specifications
56
E - Software Record/Reference Sheet
59
Warranty
Inside back page 4
FIGURES & TABLES
Figure 1-1
Recorder Description
5
Figure 1-2
Recorder Display
6
Figure 2-1
Installation Panel Dimensions Conduit Opening Locations
8
Figure 2-2
Noise Suppression
10
Figure 2-3
Noise Suppression
10
Figure 2-4
Board and Terminal Locations
13
Figure 2-5
AC Power Input
14
Figure 2-6
Thermocouple Inputs
14
Figure 2-7
RTD Inputs
14
Figure 2-8
Milliamp, Volt and Millivolt Inputs
15
Figure 2-9
Digital Communications
15
Figure 2-10A
SPST Relay Output
16
Figure 2-10B
SPDT Relay Output
16
Figure 2-11
SSR Output
16
Figure 2-12
Current Output
17
Figure 2-13
24 VDC Power Supply Option
17
Figure 3-1
Keypad Features
19
Figure 4-1
Changing Pens
33
Table 3-1
Enable Mode Configuration Procedure
24
Table 3-2
Program Mode Configuration Procedure
28
Table 3-3
Alarm Set Mode Configuration Procedure
32
Table 4-1
Calibration Procedure
35
Table 4-2
Test Procedures and Description
40
FLOW CHARTS
Flow - Alarm Set
32
Flow - Calibration
34
Flow - Enable
24
Flow - Program
25
Flow - Test
39 5
Product Description
1.1
1.1.1 GENERAL
The instrument is a microprocessor based circular chart recorder capable of measuring,
displaying and recording from a variety of inputs. Applications include temperature, pressure,
flow and others. The instrument can be specified as either a single or dual pen unit.
Recording, alarm, or limit settings and other parameters are easily entered via the keypad. All
user data can be protected from unauthorized changes by the Enable mode security system,
and is protected against memory loss, as a result of AC power outage, by battery back-up.
The process variable input for each terminal is user configurable to directly connect to either
thermocouple, RTD, mVDC, VDC, or mADC inputs. Changes in input type can easily be
made by the user. Thermocouple and RTD linearization, as well as thermocouple cold
junction compensation, is performed automatically. The instrument process variable inputs
are isolated. An isolated 24 VDC regulated transmitter power supply can be provided in the
instrument for use with up to two 4 to 20 mADC sensor transducers.
The instrument can be ordered to operate on either 115 VAC or 230 VAC power at 50/60 Hz.
The 230 VAC option includes a switch for selecting either 230 VAC or 115 VAC operation.
The recorder is housed in a structural foam enclosure suitable for panel or surface mounting.
FIGURE 1-1
Keypad

Scroll Key

Up Key

Down Key
PEN 1 DISPLAY
PEN 2 DISPLAY
Pen 1
Auto/Manual
Key
Pen 2
Auto/Manual
Key
Pen 1
Reset
Pen 2
Reset 6
1.1.2 RECORDING
The instrument records the selected process variable on a 10-inch circular chart. One box of
standard charts is provided with each recorder. Charts are available in a wide selection of
ranges. Chart rotation speed is programmable from 0.1 to 999.9 hours per revolution in 0.1
hour increments. The instrument can be ordered with one or two pens. Pen 1 is red and Pen 2
is green. Pens are the disposable fiber-tip type.
1.1.3 DISPLAYS
Each instrument is provided with a digital display and status indicator for each pen provided,
(See Figure 1-1, page 5). The digital display is configured to display the Process Value. The
display in the upper right corner is for Pen 1, the display in the lower right corner is for Pen 2
(if provided). The display includes status indicators for Alarm 1 and Alarm 2, degrees C,
degrees F, engineering units, and setpoint (for limits). See Figure 1-2 (below).
Display resolution is programmable for 0.1 or 1 degree for thermocouple and RTD inputs, and
zero, one, two or three decimal places for other input types.
1.1.4 ALARM
Two alarm indications are standard for each pen on all instruments. Alarm settings are
programmable. Alarm type may be set as process direct or reverse (high or low). Alarm
outputs can be provided by assigning any relay(s) Single Pole/Single Throw (SPST or Solid
State Relay (SSR) driver) to the respective alarm.
1.1.5 LIMIT
Limit indication is standard on limit devices. Limit settings are programmable. Limits may be
High or Low and can be provided by assigning any relay to the respective limit.
1.1.6 PROCESS VALUE RE-TRANSMISSION OUTPUT
If an instrument is specified with mADC current output(s), any of the outputs may be pro-
grammed to operate as a process value re-transmission output. The output is scaleable.
1.1.7 DIGITAL COMMUNICATIONS
The instrument can be ordered with a Digital Communications option that provides the
capability of bi-directional communications with a supervisory computer.
FIGURE 1-2
Digital Display
C
F
U
Alarm 1
Alarm 2
ALRM1
ALRM2
Minus Sign
Limit
Setpoint 7
Installation and Wiring 2.1
Read these instructions carefully before proceeding with installation and operation. Electrical
code requirements and safety standards should be observed. Installation should be performed
by qualified personnel.
CAUTION: The Instrument AC power input is specified in the model number and on the
wiring label affixed to the the top center of the platen. Verify the AC power input required
by the instrument prior to proceeding with
installation.
Unpacking 2.2
Remove the instrument from the carton and inspect for any damage due to shipment. If any
damage is noticed due to transit, report and file a claim with the carrier. Write the model
number and serial number of the instrument on the inside of the front cover of this Operation
Manual for future reference.
Location 2.3
Locate the instrument away from excessive moisture, oil, dust, and vibration. Do not subject
the instrument to operating temperatures outside of the 32° to 131°F (0° to 55° C) range.
Mounting 2.4
Figure 2-1 (page 8) shows an installation view and physical dimensions for a panel mounted
instrument. The panel where the instrument will be mounted must provide rigid support for
the approximately 20 pound instrument. Adjacent instruments may be mounted within a
minimum of 2 inches horizontally and 3 inches vertically, providing that proper panel support
is supplied.
PANEL MOUNTING HARDWARE REQUIRED: (not provided with instrument)
(4) 1/4"-20 x 2" flat head bolts w/nuts
(4) appropriate lock washers
PANEL MOUNTING:
1) Cut panel opening to the dimensions illustrated in Figure 2-1 (page 8).
2) Insert the instrument in the panel opening. Firmly fasten the instrument to the panel using
the nuts, bolts and lock washers.
SURFACE MOUNTING:
1) Install the mounting brackets, ordered separately, on the vertical sides of instrument
housing. Use the brackets to fasten the instrument to the surface. 8
FIGURE 2-1
Preparation for Wiring 2.5
2.5.1 WIRING GUIDELINES
Electrical noise is a phenomenon typical of industrial environments. The following are guide-
lines that must be followed to minimize the effect of noise upon any instrumentation.
2.5.1.1 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 devices 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. 9
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.