Mantracourt UAB User Manual

UAB

Universal Amplifier/Digitiser

User Manual

MICRON METERS

www.micronmeters.com

[e-mail]

Mantracourt Electronics Limited UAB User Manual

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Chapter 1 Introduction To The Universal Process Amplifier System ......................................................... 4

Chapter 2 Installation ................................................................................................................... 5

Environmental Requirements ........................................................................................................... 5

Terminal Connections .................................................................................................................... 6

Section 1 -The Rack (RUA) Variant .................................................................................................... 7

Figure 2.1 - Rear view of Rack (RUA2) ................................................................................................ 7

Figure 2.2 UAB Rear Connection Terminals ......................................................................................... 7

Figure 2.3 The 32 Way A & C (DIN41612) Connections ............................................................................. 7

Figure 2.4 Rack Module Layout ......................................................................................................... 8

Figure 2.5 LP2 Hand Held Programming Unit ........................................................................................ 8

Figure 2.6 RUA1 for External Programmer (LP2) .................................................................................. 8

Figure 2.7 RUA2 On-Board Programmer .............................................................................................. 8

Section 2 - The Surface Mount (SMP) Variant ........................................................................................ 8

Figure 2.8 The IP65-ABS Case (LAB) Dimensions & Mounting Points ............................................................. 9

Figure 2.9 The DIN Rail Mounting (D2) Dimensions ................................................................................. 9

Figure 2.10 Stainless Steel Panel Mount & Programming Display Module, Dimensions & Mounting Points ................ 9

Figure 2.11 LCS Stainless Steel Panel Cut Out ...................................................................................... 10

Figure 2.12 Connection & Fitting Details for the Surface Mounted Amplifier (UAB) ......................................... 10

Programmers for Surface Mount Variants ........................................................................................... 11

Figure 2.13 LP1 On-Board Programmer Unit ........................................................................................ 11

Figure 2.14 LP2 Remote hand Held Programmer Unit (UAB) ..................................................................... 11

Chapter 3 Power Supplies ............................................................................................................ 12

Section 1 - The Rack Version (RS1) ................................................................................................... 12

Table 3.1 .................................................................................................................................. 12

Table 3.2 .................................................................................................................................. 12

Section 2 - The Surface Mount Versions (LS1 and LS3) ............................................................................ 12

Figure 3.1 Power Supply LS1 Connections ........................................................................................... 13

Figure 3.2 LS3 Connections ............................................................................................................ 13

Chapter 4 Input Modules .............................................................................................................. 14

Table 4.1 UADCV1 and UADCA1 Switch Configuration ............................................................................. 14

Figure 4.1 The UADC1 & UADCA1 Modules .......................................................................................... 14

Figure 4.2 The UALV1 - LVDT Module Rear Panel Connections .................................................................. 14

Figure 4.3 LVDT Switch Settings ...................................................................................................... 15

Figure 4.4 Rear Panel Connections ................................................................................................... 15

Figure 4.5 UAT1 & 2 ..................................................................................................................... 16

Figure 4.6 Thermocouple Connectors ................................................................................................ 16

Figure 4.7 RTD Module UAPT .......................................................................................................... 16

Figure 4.8 RTD Connections ............................................................................................................ 17

Fast Strain Gauge The (UAFLC) Module .............................................................................................. 18

Figure 4.9 UAFLC Module ............................................................................................................... 18

Figure 4.10 UAFLC Connections ....................................................................................................... 18

Figure 4.11 the UADIA Modules ........................................................................................................ 18

Figure 4.12 UADIA Connections ....................................................................................................... 18

Chapter 5 Output Modules ............................................................................................................ 19

Section 1 - General Description ....................................................................................................... 19

Figure 5.1 Showing the Potentiometer for Gain & Offset Adjustment ......................................................... 19

Figure 5.2 UAFAO Connections ........................................................................................................ 19

Section 2 - Digital Output Modules ................................................................................................... 20

Figure 5.3 RR1 Module .................................................................................................................. 21

Figure 5.4 LR1 Module .................................................................................................................. 21

Figure 5.5 Installation of LR1 .......................................................................................................... 22

Figure 5.6 Connection to the Surface Mount/DIN Rail Version UAI²C (S) ...................................................... 22

Section 3 - The Communications Port Modules ..................................................................................... 22

Figure 5.7 LC1 Current Loop ........................................................................................................... 23

Figure 5.8 IF25 Connecting Multiple Process Amplifiers .......................................................................... 23

LC3 Isolated RS232/485 Communications Module .................................................................................. 23

Figure 5.9 LC3 Isolated RS232/485~Mode Connections ........................................................................... 23

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Figure 5.10 Connecting Multiple Units on RS485 ................................................................................... 24

Figure 5.11 LC3 RS232 Mode Connection to PC ..................................................................................... 24

Figure 5.12 LC3 RS232 Mode Connection to Printer ............................................................................... 24

RC1 Communications Current Loop Module Connections ......................................................................... 25

Figure 5.13 RC1 Communication Connections ...................................................................................... 25

Figure 5.14 RC1 Baud Rate Selection................................................................................................. 25

Figure 5.15 Connecting Multiple Process Amplifiers ............................................................................... 26

RC3 RS232/485 Communication Connectors ........................................................................................ 26

Figure 5.16 RC3 RS232/485 Communication Connections ........................................................................ 26

Figure 5.17 - RC3 Baud Rate Selection ............................................................................................... 27

Section 4 Serial Communication Protocol ........................................................................................... 27

Fast MANTRABUS - selected when CP is 128 ........................................................................................ 27

Communications Commands ........................................................................................................... 28

Data Transmitted To Process Amplifier For Command 1 ......................................................................... 28

Table 5.1 .................................................................................................................................. 33

Process Amplifier Printer Format ..................................................................................................... 33

Chapter 6 The Amplifier Displays ................................................................................................... 35

Figure 6.1 Programmer Unit Panel Layout (RUA2) ................................................................................ 35

Figure 6.2 LP2 Remote Hand Held Programmer Unit ............................................................................. 35

Figure 6.3 Programmer Unit Panel Layout (LP1) ................................................................................... 35

Control Panel Guide ..................................................................................................................... 36

Figure 6.4 Programmer Unit Panel Layout .......................................................................................... 36

Figure 6.5 Display Module Connections and Switch Settings ..................................................................... 37

Table 6.1 .................................................................................................................................. 37

Chapter 7 Programming The Amplifiers ........................................................................................... 38

Section 1 - Display & Programming Mnemonics .................................................................................... 38

Table 7.1 Configurable Parameters for Process Input ............................................................................. 38

Table 7.2 Configurable Parameters for Dual Input Modules ...................................................................... 41

Configurable Parameters for UAFLC - Fast Strain Gauge Input Module ........................................................ 41

Table 7.3 Configurable Parameters .................................................................................................. 42

Section 2 - Setting the Conditions for Linear Inputs ............................................................................... 42

Figure 7.1 Linear Input Scaling ........................................................................................................ 42

Method of Calculating IPL and IPH from any known input values ............................................................... 42

Input Calibration Routine .............................................................................................................. 43

Section 3 - The Temperature Input Modules (UAT1 & UAT2) ..................................................................... 43

Table 7.4 - Thermocouple Input Codes ............................................................................................. 44

Table 7.5 .................................................................................................................................. 44

Section 4 - The Rate/Totaliser Input Module (UARTL)............................................................................ 45

Setting up the Input ..................................................................................................................... 45

Table 7.6 .................................................................................................................................. 45

Table 7.7 Input Configuration ......................................................................................................... 45

Setting the Prescaler .................................................................................................................... 45

Table 7.8 .................................................................................................................................. 46

Rate Measurement ....................................................................................................................... 46

Period (Time measurement between pulses) ...................................................................................... 46

Input Code ................................................................................................................................ 46

Table 7.9 .................................................................................................................................. 46

(i) Period in mSeconds ................................................................................................................. 46

Table 7.10 Period mS Fixed Scale .................................................................................................... 46

(ii) Period in µSeconds .................................................................................................................. 46

Table 7.11 Period µS Unity Scale (IPSF 1.0000) .................................................................................... 46

Frequency ................................................................................................................................. 46

Table 7.12 ................................................................................................................................. 47

Figure 7.2 Frequency Unity Scale Inputs ............................................................................................ 47

RPM ......................................................................................................................................... 47

Table 7.13 RPM Unity Scale ............................................................................................................ 47

Figure 7.3 RPM Unity Scale Range .................................................................................................... 48

Count/Rate Scaling & Scaling/Rate .................................................................................................. 48

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Scaling Example: - ....................................................................................................................... 48

RTL Module Inputs ....................................................................................................................... 49

Figure 7.4 RTL Module Inputs .......................................................................................................... 49

Section 5 - Programming the Output Functions .................................................................................... 49

Hysteresis (HYS) .......................................................................................................................... 49

Latching Outputs (OL) .................................................................................................................. 50

Table 7.14 Output Latch Codes (OL) ................................................................................................. 50

Output Action (OA) ...................................................................................................................... 50

Table 7.15 Output Action Codes (OA) ................................................................................................ 50

Delay Timers .............................................................................................................................. 50

Delay On Timer ........................................................................................................................... 50

Delay Off Timer .......................................................................................................................... 50

PID Functions ............................................................................................................................. 50

PID Empirical Tuning .................................................................................................................... 51

Section 6 - Scaling the Analogue Outputs ........................................................................................... 51

Output Scaling ............................................................................................................................ 51

Figure 7.5 Analogue Output ............................................................................................................ 51

Method of Calculating OPL & OPH from any known Output & Display Values ................................................. 52

Calibration ................................................................................................................................ 52

Figure 7.6 Showing the Potentiometers for Gain and Offset Adjustment ..................................................... 52

Figure 7.7 Showing the Potentiometers for Gain & Offset Adjustment ........................................................ 53

Chapter 8 Order Codes ................................................................................................................ 54

RUA Rack Mounted Universal Input Process Amplifier ............................................................................. 54

UAB Universal Amplifier ................................................................................................................ 54

SMP Surface Mount Process Indicator & Controller ................................................................................ 55

CE Approvals .............................................................................................................................. 56

Instrument Setup Record Sheet ....................................................................................................... 57

W A R R A N T Y .......................................................................................................................... 57

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Chapter 1 Introduction To The Universal Process Amplifier System

The Mantracourt Electronics Universal Process Amplifier System is based upon a concept of modular construction. By
adopting such a concept, it is possible to offer a great deal of flexibility of construction, to meet the wide and
varying needs of system building.
The system is centred on a Eurocard sized amplifier PCB, which consists in its standard form of, Central Processing,
and voltage and current Analogue output ports. Facilities are provided to connect a series of ‘plug in ’ option boards
for inputs, relay and communications outputs together with mains and low voltage DC power supply options.
A special Fast Analogue output module is also available to complement a Fast Strain Gauge input option.
The modular concept offers the opportunity for assembly in Surface Mount, DIN Rail and 19-inch Rack variants.
The system concept is described in diagrammatic form with the range of options listed. The options will be
described under the various Chapters as follows:

1. Introduction

2. Installation requirements

3. Power Supplies

4. Input Modules

5. Output Modules & Communications Information

6. The Amplifier Displays

7. Programming the Amplifier including essential INPUT CALIBRATION ROUTINES, which must be actioned. See
Chapter 7

8. Order Codes

9. Specifications

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Chapter 2 Installation

In order to maintain compliance with the EMC Directive 2004/108/EC the following installation recommendations
should be followed.

Inputs:

Comms Port:

Analogue
Output:

Use individually screened twisted multipair cable. (e.g. FE 585 - 646)
The pairs should be :
pins 1 & 6
pins 2 & 5
pins 3 & 4
Terminate all screens at pin 1 of the input. The screens should not be
connected at the transducer end of the cables.

Use individually screened twisted multipair cable. (e.g. FE 118-2117)
The pairs should be:

-Tx & +Tx

-Rx & +Rx
Terminate screens at pin 1 of the input .
The screens should not be connected at the host port.

Use screened twisted pair cable. (e.g. RS 626-4761)

Terminate screen at pin 1 of the input.
The screen should not be connected at the host port.

Pin 1 of the input should be connected to a good Earth. The Earth connection
should have a cross-sectional area sufficient enough to ensure a low

impedance, in order to attenuate RF interference.

Country

Supplier

Part No

Description

UK

Farnell

118-2117

Individually shielded twisted multipair cable (7/0.25mm)- 2 pair

Tinned copper drain. Individually shielded in polyester tape.
Diameter: 4.1mm

Capacitance/m: core to core 115 pF & core to shield 203 pF

UK

Farnell

585-646

Individually shielded twisted multipair cable (7/0.25mm)- 3 pair

Tinned copper drain. Individually shielded in polyester tape.
Diameter: 8.1mm

Capacitance/m: core to core 98 pF & core to shield 180 pF

UK RS 626-4761 Braided shielded twisted multipair cable (7/0.2mm)- 1 pair

Miniature- twin -round Diameter: 5.2 mm

Capacitance/m: core to core 230 pF & core to shield 215 pF

Environmental Requirements

UAB units can operate in any industrial environment provided the following limits are not exceeded at the point of
installation:

Operating

Temperature:

-10 ºC to 50 ºC

Humidity:

95 % non condensing

Storage Temperature:

-20ºC to +70ºC

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Units can operate from any one of the following:

or

or

220/240V AC, 50/60Hz

110V AC, 50/60Hz

9-30V DC, 50/60Hz (Not RUA)

Terminal Connections

Connection between the UAB modules and input/output signals, are made via screw connections to the rear of the
rack, or edge of the UAB in Surface Mount Versions.
(See Figure 2.1)

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Section 1 -The Rack (RUA) Variant

Figure 2.1 - Rear view of Rack (RUA2)

Figure 2.2 UAB Rear Connection
Terminals

Figure 2.3 The 32 Way A & C
(DIN41612) Connection s

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Figure 2.4 Rack Module Layout

Figure 2.5 LP2 Hand
Held Programming Unit

Figure 2.6 RUA1 for
External Programmer
(LP2)

Figure 2.7 RUA2 On-Board
Programmer

Section 2 - The Surface M o unt (SMP) Variant

The surface mount variant of the Universal Amplifier is offered in a number of different configurations dependant
upon the system installation requirements, to which any of the input, output and communications modules can be
fitted as described in the diagram in Section 1. Each description is followed by the order coding for ease of
identification.

1.The surface mount IP65 ABS cased version with a large LCD display and programming module mounted in the lid,

where local programming and control is required. - (SMP/C).

2.The DIN rail mounted version with a remotely connected large LCD display and programming module fitted with a

stainless steel panel mounting fixture which will operate up to 2 metres from the amplifier. (SMP/D) A version of
the (SMP/D) above is offered with a driver package (LCDR) where there is a requirement for the remote display
and programming module to operate over distances greater than 2 metres, and up to 100 metres from the
amplifier. Where order codes are required for individual items, please refer to the order code list in the rear of
the manual at Chapter 8.

3.ABS Cased Versions are available without a display and programming module mounted on the lid. Programmed

through the internal FCC socket on the UAB, (using an LP2 Hand Held Programmer see Figure 2.13) or the remote
LP1 On Board Programmer see Figure 2.14

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Figure 2.8 The IP65-ABS Case (LAB) Dimensions & Mounting Points

Case Depth = 75mm

Figure 2.9 The DIN Rail M o u n ting (D2) Dimensio ns

Max height above

DIN Rail Mounting
surface = 100mm.
Fits ALL carrier rails
DIN/EN 35

Figure 2.10 Stainless Steel Panel Mount & Programming Display
Module, Dimensions & Mounting Points

4mm M4 studs x 12mm for mounting. Sealing is provided by a Neoprene gasket
For LCD max cable length = 2 meters. For LCDR max cable length = 100 meters

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Figure 2.11 LCS Stainless Steel Panel Cut Out

Where there is a requirement for the stainless steel fixture to be mounted in a panel please note the details of the
‘Cut Out’ are as described in the following drawing.

Figure 2.12 Connection & Fitting Details for th e Surface Mounted
Amplifier (UAB)

Display & Keypad FCC68 Connector (For Surface Mounted Display or Hand

Held Programmer LP2 for Non Display Versions.)

The standard
(100mS) strain
gauge input is
contained within
the LCB module &
therefore has no
separate input
module

15 Way field screw
connection for
input, contacts &
AN-OP

For DIN mounting cut off

PCB on white line

WATCHDOG LED

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Programmers for Surface Mou n t V arian ts
Figure 2.13 LP1 On-Board

Programmer Unit

Figure 2.14 LP2 Remote hand Held

Programmer Unit (UAB)

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Chapter 3 Power Supplies

There are three types of power supply available within the UAB system. The rack versions RUA1 and RUA2 are served
by a common power supply, which offers power to the 12 channels in the case of the RUA1 and 8 channels for the
RUA2. The Surface Mount versions are offered with mains an AC version or a low voltage DC version.

Section 1 - The Rack V ersion (RS1)

The RS1 supplies power to the channels within the rack via the common back plane, offering 220/240VAC at 50/60
Hz or 110VAC at 50/60 Hz. The 110/240 is selected by a switch on the rear of the power supply module. A green LED
on the front panel indicates when power is applied

A 5-Ampere protection fuse is fitted within the power input socket.

The maximum power rating for a full rack is 100 Watts.

Connection to the rack is made via a flying lead with a shrouded and earthed IEC mains connector

Note: Inputs are not intended to be connected to voltages above 50 VAC or 120Vdc

Tables 3.1 and 3.2 show details of the connections and voltages for the various supply rails.

Table 3.1

SUPPLY CONNECTION

TO DIN 41612

MIN V MAX V MAX ac V CURRENT

per channel

COMMENTS

0V 15a, 15c - - - - Common for

processor supplies

-5V 17a, 17c -4.80 -5.2 1mV 110Ma Power supply

-14V
UNREG

19a, 19c

-11

-18V

150mV

2mA

Used to detect power
fail

-9V8 20a, 20c -9.1 -10.2 1mA 200mA Provides excitation
for stain gauges and

relays

Table 3.2

SUPPLY

CONNECTION
TO DIN 41612

MIN V

MAX V

MAX ac V

CURRENT
per channel

COMMENTS

+24V ISO

25a

+20

+32

240mV

32mA

Only required if AN­OP to be used

-5V ISO

26a

-4.75

-5.25

1mV

5mA

Only required if AN­OP to be used

0V ISO

27a - - - -

Only required if AN­OP to be used

Section 2 - The Surface Mount Versions (LS1 and LS3)

The LS1 power supply is a ‘plug in’ module supplying 110 Volts AC at 50/60 Hz or 220/240 Volts AC at 50/60 Hz.

A maximum power rating of 10 Watts is available, with this module.

The running current for each amplifier is between 250 and 480 milliamps dependant upon module configuration,
with a start up current of 3 Amps for 20 milliseconds. Earthing (or shield)- If the amplifier is not earthed elsewhere,
an earth should be made to the screen (SC) of the 15 way connector.

PROC-

ESSOR
SUPPLIES

ANALOGUE

OUTPUT
ISOLATED
SUPPLY

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Figure 3.1 Power Supply LS1 Connections

Figure 3.2 LS3 Connections

The LS3 module should be protected on installation by an in line fuse.

The LS3 power supply is a 'plug in' module supplying 9 to 30 Volts DC. Similar in characteristics to the LS1 with
regard to power and current ratings.
The module is not reverse polarity protected and will require similar protection at installation.

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Chapter 4 Input Modules

The following DC Voltage & Current input modules are available:

-

UADCV1 -

UADCA1 ­UADCV2 ­UADIA -

UADIV -

0 to 10 Volts

0 to 20mA
± 200mV
Dual Input - 4 to 20mA

Dual Input - 0 to 10 Volts

Table 4.1 UADCV1 and UADCA1 Sw itc h Configuration

SW1

±200mV

0-10V

0-20mA

1
2
3
4
5
6
7

8

10V Excite
24V Excite
5-25V VAR Excite
ON
OFF
OFF
OFF

OFF

10V Excite
24V Excite
5-25V VAR Excite
OFF
ON
ON
OFF

ON

10V Excite
24V Excite
5-25V VAR Excite
OFF
ON
ON
ON

OFF

Figure 4.1 The UADC1 & UADCA1 Modu l es

Figure 4.2 The UALV1 - LVDT Module Rear Panel Connections

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Figure 4.3 LVDT Switch Settings

The UARTL - Rate/Totaliser Module

Figure 4.4 Rear Panel Connections

Note: See Chapter 7 Section 4 for details of input and pre scaler settings.

UAT1 ­UAT2 -

Thermocouple Type K Modules
Thermocouple Type J Modules

Connecting the Thermocouple

WARNING:
ENSURE POWER IS SWITCHED OFF BEFORE MAKING CONNECTION TO THE UAB

1. Connect the thermocouple to the UAB terminal as shown in Figure 4.6
Note: If the thermocouple has a floating input, connect terminal 1 to ground.

2. The external cold junction sensor is always connected between input terminals 4 and 6. If no external sensor is
used, link terminals 4 & 6.

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3. Normally, thermocouple burnout is indicated by upscale over range. If downscale indication is required, link
terminals 2 & 3.

Figure 4.5 UAT1 & 2

Figure 4.6 Thermocouple Connectors

The UAPT Connecting the Resistance Thermometer Module

Connect the resistance thermometer to the UAB terminals as shown in Figure 4.8 using the terminals appropriate to
2, 3 and 4 wire connections.

Note: It is recommended that 4 core-screened cable be used for this connection with terminal 6 used for screen and
ground.
If however, this is not practical, terminal 2 may be used for guard and ground.

Figure 4.7 RTD Module UAP T

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Figure 4.8 RTD Connections

UAFLC Fast Strain Gauge

The UAFLC offers a direct connection to most low level (foil) strain gauge sensors.
A 10-volt excitation is provided and it is monitored to compensate for any variation due to supply drift, load
regulation or voltage drop in the cable between the sensor and the UAFLC.
The maximum supply current is 150mA, which allows for the connection of 4 x 350 Ohm strain gauges.
Strain gauge sensitivity is preset via DIL switches to 0.5, 0.8, 1.0, 1.25, 1.5, 2.0, 2.5, 3.5, 5, 10, 20, 50, 100 and 200
mV/V. Select the next value higher than the strain gauge output maximum.

Note: It is important that the UAFLC is powered up with the strain gauge connected to the input as the A/D
performs an Autocal of its own on power up.

SW1 mV/V

1 2 3 4 5 6 7 8 0.5 x - - x - x x x

0.8

- x x - - x x x 1.0 - x - x - - x -

1.25

- x - - - - - x 1.5 - - x x x - - -

2.0 - - x - x - - x

2.5 - - x - - - - -

3.5 - - - x x - - -

5.0

- - - x - - - x 10.0

- - - - x - - x 20.0

- - - - - x - x 50.0

- - - - - - x x 100.0

- - - - - - - x 200.0

- - - - - - -

-

x = ON - = OFF
mV/V = ±mV/V nominal full range gain within ±3%

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Fast Strain Gauge The (UAFLC) Mo d ul e

Figure 4.9 UAFLC Module Figure 4.10 UAFLC Connections

Dual Input Modules

Provide two non-isolated inputs either 4 to 20mA or 0 to 10 volts (This should be specified at time of order) as:

• UADIA = 4/20mA

• UADIV = 0/10 volts

These inputs have independent scaling factors IPLA and IPHA for input 'A' and IPLB and IPHB for input 'B'.

The display can be selected from the list of 'A' and 'B' functions as follows, and can be selected under the mnemonic
'Ab'

0 =
1 =
2 =
3 =
4 =

A + B
A - B
A x B
A/B
A = process input, B = setpoint (SP1)

Scale factors can be applied to this function using a scale factor 'SF', a division factor 'DF' and a display offset 'OFFS'.
The analogue output, relays and printer take their value from the function selected at 'Ab’.

Figure 4.11 the UADIA Modules Figure 4.12 UADIA Connectio ns

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Chapter 5 Output Modules

Section 1 - General Description

Analogue outputs of 4 to 20mAmps and 0 to 10 volts are standard features and an integral part of the Universal
Amplifier pcb.
Further output modules are available offering alarm/control, printer and communications facilities. Analogue
outputs are fully scaleable, opto-isolated and digitally generated.
The analogue output signals are generated by the CPU from the displayed input variable, so that output signals are
normally related to displayed input values except where the PID function is selected. The 4 to 20 mA output is pre
calibrated to an accuracy of within 0.15% of the range. The 0-10V outputs are accurate to within 2% of the 4 to
20mA output.

Notes:

1. Maximum current load on voltage modules is 2mA

2. Maximum drive voltage available in current modules is 20V

The PID function is an option selectable within the standard software program and provides, where required an
analogue output so that outputs are related to the PID power levels and not the displayed input signal.
Note: In this mode the analogue output cannot be scaled.

A fast analogue output module (UAFAO) is available for use with the fast strain gauge (10msec) input (UAFLC),
where a fast capture facility is a requirement.

The digital output modules consist of two single pole change over relays with ON/OFF or PID control. If required,
latching outputs may be selected via the keypad, reset action being achieved by a contact closure or via the
communications module, where a program has been written via an appropriate protocol.
Set points and hysterisis are also set via the keypad or from a communications input.
Relay outputs may also be inverted via the keypad.
Relay operations are controlled by set point and hysterisis values, output inversion, time delays or by the PID time
proportioning output on set point 1.

Figure 5.1 Showing th e Potentiometer
for Gain & Offset Adjus tment

Figure 5.2 UAFAO Connections

Fast Analogue The (UAFAO) Module

Important Note 1: The output action mnemonic OA must be set to 32 when operating with this module.
Important Note 2: When changing the value of OA to, or from ’32; it is necessary to power the unit off and back on

again as a restart.

See Note with regard to calibrations on Chapter 7 ‘Method of Calculating OPL & OPH from any known output and
Display’

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Section 2 - Digital Output Modules

Module Functions

The Universal Amplifier can be programmed so that the relay output module reacts to all or any of the following
functions:

• Set points

• In Flight compensation

• Hysteresis

• Relay inversion

• Latching

Set Points (SP)

Set points are used to produce output signals at any required value so that the operation of the monitored process
can be maintained to preset levels. Any excursion beyond set points will activate the relay or relays, to provide
alarm or initiate control as required.
Two set points (SP1) and (SP2) can be programmed to suit different applications. The actions of either or both set
points can inverted if required.
For normal operation the set point output is active until the input reaches the set point level. In this condition when
the input value is less than the set point, the SP indicator is on and the output relay is energised producing a closed
circuit on a normally open contact. When the set point value is reached, the SP indicator is off and the relay is de­energised producing an open circuit output.

For an inverted operation the reverse conditions apply.
Normal and inverted action is determined by the direction of the input value as it changes.
For example: In alarm applications.

A High-High operation allows for a rising input value to operate on two set points to define an acceptable quantity,
weight or band of operation.

A Low-Low operation operates on a falling value.

A High-Low operation will operate on a rising or falling value, setting a 'band' by one set point operating normally
and the other being an inverted action.

Hysteresis (HYS)
Once a Hysteresis value has been set, it will be applied to both set points entered. It is effective for both normal
and inverted action.
When Hysteresis is applied to set points with normal output action, the input is allowed to rise to the set point
value and the output is then turned off. The output is held off until the input value has dropped to the set point
minus the Hysteresis value.
For inverted action the input drops to the set point and the output goes off and comes on again when the input rises
to the set point plus the Hysteresis value.

Output Action (OA)
The Output Action facility allows the user to determine whether set points produce normal or inverted and latched
or unlatched output operation. If an analogue output module is also fitted, the Output Action function determines
whether the module's output is inverted or not.
For programming details refer to Chapter 7 Table 7.15

Latching Output (OL)
The latching facility allows the relay module output to held until the reset externally Latching is applied to the
status of the relay SP1 or SP2.
For programming details refer to Chapter 7 Table 7.14

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Digital Output Modules -
(LR1) Surface Mount and (RR1) Rack Mount There are two relay modules available, which function in a similar way.
The ‘plug in’ module LR1 used with the surface mount version is fitted with relay status LEDs, connections being
made directly on to the module terminal block

The RR1, which is used with the rack version, is not fitted with relay status LEDs, these being brought out for
observation, to the front of the rack channel. Connections to the module are made to a 4 way field terminal at the
rear of the rack channel.

RR1 - 2 SPCO relays, SP1 and SP2

Relay contact rating - 50V @ 500mA

LR1 - 2 SPCO relays, SP1 and SP2,

Relay contact rating - 240V @ 5A AC

Figure 5.3 RR1 Module Figure 5.4 LR1 Module

The Remote Driver Modules - UAI ²C

The module offers a general I/O facility for connection to Relays, Real Time Clock and Remote Displays, and is a
direct 'plug in' replacement for the RR1 or LR1 Relay Module.

Two versions of the module are available one for the Rack and the other for the Surface Mount versions of the
Universal Amplifier Board.

Connection to the Rack version - UA1²C (R)

The Channel 4 Way Screw

NO 1
Com 1
NO 2

Com 2

Wire Colour from REMC1
Violet & Yellow
Red
Black

Blue

Signal
GND
+5V
CLK

DATA

Connection to the Surface Mount/DIN Rail version - UAI ²C(S)

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Figure 5.5 Installa tion of LR1

To meet the Specified EMC Fast transient requirements
it is important that the ferrite ring supplied is fitted as
per the following instructions.

Illustration showing ferrite ring FEC 323-4940 fitted to
the LR1 relay wiring.

Two turns of the wiring are passed through the ring
positioned 12cm from the LR1 end of the cable to
improve immunity to electrical fast transients and
bursts.

Figure 5.6 Connection to the Surface Mount/DIN Rail Version UAI²C (S)

Section 3 - The Communications Port Modules

A series of communications modules in both surface mount and rack versions, provide for two way data links to an
intelligent host such as a Personal Computer, Main frame or PLC, which are able to acquire displayed values and
read or modify the user configurable parameters, using any of the following: -

A 20mA current loop usually connected through an IF25 current loop to RS232 interface unit for multiple amplifier
connection. - (LC1) for the surface mount and (RC1) for the rack version.

An RS232 for a one to one communication, usually where a printer connection is required. (RC2) for the rack
version.

A RS232/485 (link selectable) for one to one or multi-drop applications - (LC3) for the surface mount and (RC3) for
the rack version.

Three communication formats, FAST MANTRABUS, ASC11 and PRINTER are selected from the mnemonic CP via the
keypad of the display/programmer.

Integrity is ensured by pre-programmed default parameters, should a loss of communications with the host unit
occur.

Connection and Baud rate setting details are shown in the following module diagrams: -

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Figure 5.7 LC1 Current Loop

Figure 5.8 IF25 Connecting Multiple Process Amplifiers

Connecting Multiple Process Amplifiers to the IF25 Interface
Notes

1. Maximum loop voltage is 50V dc.

2. Loop is isolated from host and Process Amplifiers. Loop should be earthed via Rx - on IF25/254

3. IF25 used for up to 25 Process Amplifiers.

4. At 19,200 Baud, max. cable length is 100m metres, using cable type BICC H8085.

LC3 Isolated RS232/485 Co m munications Modul e
Figure 5.9 LC3 Isolate d RS232/ 485~M ode Connection s

Note: When multi dropping in RS485 mode, the last device should be fitted with LK2, which acts as a 120R­terminating resistor.

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Figure 5.10 Connec tin g M u l tiple Units on RS485

Figure 5.11 LC3 RS232 Mode Connection to PC

Note: LK1 must be fitted for RS232 operation

Figure 5.12 LC3 RS232 Mode Connection to Printer

Note 1: LK1 must be fitted for RS232 operation
Note 2: If no RTS is available from the printer, fit LK2

NOTE:
When using an RS232 to RS485 converter, which has a non-biased receiver, the following actions are recommended:

-

To bias the device:

1. Terminate the receiver with 140R in place of the usual 120R

2. Fit a 1.5K from the receive negative to the receiver +5V supply, or a 3K3 to the +12V supply.

3. Fit a 1.5K from the receive positive to the receiver supply Ground.

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RC1 Communications Current Loop Module Connections

RC1 used in connection with an IF25 to provide a high noise immunity 20mA current loop. RC1 modules are supplied
with a BLUE 9 way bus-terminating header. One of these headers must be connected to each channel fitted with an
RC1 module, apart from Channel 1, which is terminated by links, LK1 & LK2 on back plane.

Figure 5.13 RC1 Commun ica tio n Connections

9 way ‘D’ type socket with
(RED) identifier

9 way ‘D’ type socket
(BLUE) for channels 2-12
supplied with RC1

Figure 5.14 RC1 Baud Rate Selection

Baud rate is selected by a link header

(SW1)

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Figure 5.15 Connecting Multiple Process Amplifiers

IF25 To Multi Rack System

Notes:

1. Maximum loop voltage is 50V dc.

2. Loop is isolated from host and RCA15s. Loop should be earthed via Rx - on IF25/254

3. IF25 used for up to 25 RCA15s.

4. At 19,200 Baud, max. cable length is 100m meters, using cable type BICC H8085.

RC3 RS232/485 Communication Connectors

Providing isolated multi-drop RS485 for up to 25 RCA15 Channels.

For each RC3 module a GREEN 9 way bus terminating header is supplied. One of these must be connected to each
channel fitted with an RC3 module. Channel 1 is terminated by links LK1 & LK2 on back plane.

Figure 5.16 RC3 RS232/485 Communication Connections

Note: The last device may be terminated by 120R resistor by fitting LK2 on RC3 module.
LK1 on RC3 must not be fitted for multi-drop applications.

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Figure 5.17 - RC3 Baud Rate S election

Baud Rate is selected by a link header (J3)

Do not change baud setting with power on

NOTE:

When using an RS232 to RS485 converter, which has a non-biased receiver, the following actions are recommended:

- To bias the device:

1. Terminate the receiver with 140R in place of the usual 120R

2. Fit a 1.5K from the receive negative to the receiver +5V supply, or a 3K3 to the +12V supply.

3. Fit a 1.5K from the receive positive to the receiver supply Ground.

Section 4 Serial Communication Protocol

General

Incoming data is continually monitored by the Process Amplifier on its serial input line. Each byte of data is
formatted as an eight bit word without parity, proceded by one start bit and followed by one stop bit.
Transmission and reception of data up to 19.2K Baud is possible, the actual rate being selected by six position
header links on the communications module. The Baud rate depends upon the communications, hardware
specification, distance and cable type.

Fast MANTRABUS - selected when CP is 128

To signify commencement of a new 'block' of data, the HEX number FFH is used as a 'frame' character, followed by
the station number of the unit under interrogation. This is entered via the Process Amplifier keypad under
mnemonic SDSt and ranges from 0-254). The Process Amplifier acts upon incoming data only if its own station
number immediately follows the FFH character.

New data must be received as a string of four nibbles (bits 7-4 set to zero), which are assembled into two bytes, and
written into the variables store within the Process Amplifier. The most significant nibble must be received first and
the last nibble must have the most significant bit (bit 7) set to indicate the end of data. This is followed by the
checksum. The data transmitted from the Process Amplifier is always sent as complete bytes. The station number
precedes the data and the checksum follows the data. The data format used is signed 15 Bit. The most significant
Bit of the most significant Byte is set for negative numbers.

Operation

There are two modes of operation, namely data requests by the host controller and data changes. Data requests
from the Process Amplifier consist of either a complete dump of the data variables stores in RAM or the display
reading.
Data changes consist of writing new data to Process Amplifier variables, thus changing parameters such as Set
Points, in flights etc.
An acknowledgement message is returned to the Process Amplifier to indicate that the new data has been acted
upon.

Updating
The station number followed by the command byte determines the required mode or variable to be updated. An
EXOR checksum consisting of the station number command byte and any following data must be appended to the
received data. It is most important that the byte preceding the checksum must have its most significant bit set to
signify the end of data.
The Process Amplifier works out its own checksum and, if it disagrees with the received one, a not acknowledge
(NAK) message is returned.

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Communications Commands

The following is a list of commands available for reading to or writing from the Process Amplifier.

Command No.

DEC

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

22

HEX

1
2
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
0F
10
11
12
13
14
15

16

Description

REQUEST ALL DATA INCLUDES PROCESS VARIABLE INPUT
REQUEST DISPLAY DATA
SET POINT 1
SET POINT 2
HYSTERESIS
OUTPUT LATCH
OUTPUT MODE SELECT
PROPORTIONAL BAND
INTEGRAL TIME
DIFFERENTIAL TIME
CYCLE TIME
INPUT LOW
INPUT HIGH
OUTPUT LOW
OUTPUT HIGH
INPUT RANGE SELECT
DECIMAL POINT POSITION
STATION NO.
EEPROM ENABLE/DISABLE FLAG
OUTPUT RELAY RESET
TOTALISER COUNT RESET

PEAK HOLD RESET

SP1
SP2
HYS
OL
OA
PB
IT (ont)
DT (oFFt)
CT(da)
IPL
IPH
OPL
OPH
IP
DP-r
SDSt

-

-

-

-

Command 1 Request for All Data:

Data Transmitted To Process Amplifier For Command 1

0FFH, Station Number, 081H, Chksum

Where Chksum = Station number EXOR with 081H. Example: To obtain a complete dump of the variables in the
Process Amplifier whose Station number is 47 send the following Data:-

0FFH, 02FH, 081H, 0AEH

Note MS Bit Set

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Response to Command 1 From Process Amplifier

Byte

1
2,3
4,5
6,7
8,9
10,11
12,13
14,15
16,17
18,19
20,21
22,23
24,25
26,27
28,29
30,31
32,33
34,35
36
37

38

STATION NUMBER
DISPLAY
SET POINT 1
IN FLIGHT 1
SET POINT 2
IN FLIGHT 2
HYSTERESIS
OUTPUT ACTION
A/D COUNTS FOR LOW CALIBRATION POINT
A/D COUNTS FOR HIGH CALIBRATION POINT
DISPLAY LOW CALIBRATION VALUE
DISPLAY HIGH CALIBRATION VALUE
AUTO TARE
DISPLAY AVERAGING
OUTPUT LOW
OUTPUT HIGH
DECIMAL POINT POSITION
STATION NUMBER
EEPROM ENABLE/DISABLE FLAG
RELAY STATUS

EXOR CHECKSUM OF THE ABOVE DATA

NOTE: Most significant byte precedes least significant byte for data sent by Process Amplifier

Command 2 Request Display Data

DATA transmitted to Process Amplifier for Command 2.
0FFH, Station number, 082H, Chksum

Where Chksum = Station number EXOR with 082H Example: To obtain the display reading of an Process Amplifier
whose station number is 47 send the following Data:

0FFH, 02FH, 082H, 0ADH

Note MS Bit Set

Response to Command 2 from Process Amplifier
Byte

1. Station No.

2. Display reading M.S. Byte.

3. Display reading L.S. Byte.

4. EXOR checksum of above data and Station No.

If, when using commands 1 or 2, an error is detected by the Process Amplifier then the Not Acknowledgement string
is transmitted by the Process Amplifier.

Commands 3 To 18: Write data to Process Amplifier parameter

Commands 3 to 18 all have the same format. Format for data transmitted to Process Amplifier for Commands 3 to
18: ­0FFH, Station No, Command No, MSN, NMSN, NLSN, LSN, CHKSUM
Where MSN
NMSN
NLSN
LSN
CHKSUM

= Most significant nibble of data
= Next most significant nibble of data
= Next least significant nibble of data
= Least significant nibble of data with MSBIT set
= The following EXOR’d with each other, Station number, command

number, MSN, NMSN, NLSN, LSN with MSBIT set

Example: To change SP1 to 200.0 on a Process Amplifier whose station number are 47. The following data is sent.

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Please note the following points apply: -

1. The decimal point is ignored i.e. 200.0 equals 2000 digits

2. The data is sent in Hex nibbles so 2000 = 00H, 07H, 0DH, 00H

0FFH, 02FH, 03H, 00H, 07H, 0DH, 80H, 0A6H

Note MS BIT SET

Response to Command 3 to 22
If the data has been accepted by the Process Amplifier then the following acknowledgement string is transmitted by
the Process Amplifier.

Station number, 015H (NAK)

If there are any errors with the data received by the Process Amplifier then the following Not Acknowledgement
(NAK) string is transmitted by the Process Amplifier: -

Station number, 06H (ACK)

Command 19: EEPROM ENABLE / DISABLE
The EEPROM disable facility can be used for any of the following:
I. To limit the number of write cycles to EEPROM reducing degradations.
II. Change data in the Process Amplifier RAM only, allowing EEPROM to hold power up values.
III. Leave base constants in the EEPROM for later update to RAM, which allows manipulation of the RAM before

writing to the EEPROM.

Writing new data from the RAM to the EEPROM.
EEPROM disable is achieved by writing 0100H to the Process Amplifier via command 19. In this state all writing to, or
reading from the EEPROM is inhibited.

The EEPROM can be re-enabled in 2 ways:
By writing 0200H via command 19. This writes the current contents of the variables store in the Process Amplifier
into the EEPROM

By writing 0400H via command 19. This updates the variables store from the current contents of the EEPROM.

Examples

To disable the EEPROM on an Process Amplifier whose Station number is set to 47

0FFH 02FH 013H 00H 01H 00H 080H 0BDH

To re-enable the EEPROM and update the RAM with the old EEPROM constants:

0FFH 02FH 013H 00H 04H 00H 080H 0B8H

To re-enable the EEPROM and update it with the new RAM data:

0FFH 02FH 013H 00H 02H 00H 080H 0BEH

For response see 'Response to Command 3 to 22'.

Command 20: Output Relay Reset
DATA transmitted to Process Amplifier for Command 20

OFFH, Station number, 094H, CHKSUM

Where CHKSUM = Station Number EXOR with 094H Example: To output a relay reset to an Process Amplifier whose
Station Number is set to 47

0FFH, 02FH, 094H, 0BBH

Note MS BIT SET

For response by Process Amplifier see 'Response to Commands 3 to 22'

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Command 21: Auto Tare
DATA transmitted to Process Amplifier for Command 21

OFFH, Station number, 095H, CHKSUM
Where CHKSUM = Station Number EXOR with 095H Example: To output an Auto Tare command to an Process
Amplifier whose Station Number is set to 47

0FFH, 02FH, 095H, 0BAH

Note MS BIT SET

For response by Process Amplifier see 'Response to Commands 3 to 22'

Command 22: Peak Hold Reset
DATA transmitted to Process Amplifier for Command 22

OFFH, Station number, 096H, CHKSUM

Where CHKSUM = Station Number EXOR with 096H Example: To output a Peak Hold reset to an Process Amplifier
whose Station Number is set to 47

0FFH, 02FH, 096H, 0B9H

Note MS BIT SET

For response by Process Amplifier see 'Response to Commands 3 to 22'

Example of a Basic C ode to Communicate wit h M ANTRABUS

open the serial port with no handshaking

OPEN"COM2:4800,N,8,1,RS,DS,BIN" FOR RANDOM AS#1

request display from device 1

Frame FF

Station No

1

Command 2

And add 80 hex
to this byte as it
is the last before
as the checksum

Checksum of

all bytes except frame

talk$=CHR$(&HFF)+CHR$(&H1)+CHR$(&H82)+CHR$(&H1 XOR&H82)

print the string to t h e port

PRINT#1,talk$;

(must add semicolon after string to stop transmitting a carriag e ret urn)
wait for a while (this depends on how many bytes you are expecting and the baud rate!)
input all the bytes in the serial buffer

input.from.uab$=INPUT$(LOC(1),#1)

ASCII Format - selected when CP is 129
The serial data to and from the Process Amplifier is formatted as eight bit words with no parity preceded by one
start bit and followed by one stop bit. The baud rate (up to 9.6k Baud) is selected on the COMMS module. All
communications are carried out using the standard ASCII character set. Incoming line feeds and spaces are ignored;
upper and lower case letters are permitted. The incoming data is continually monitored for Carriage Return
characters (Chr$13D). If one is received the next three characters (000 - 999) are compared with the Process
Amplifier station number (SDST) previously entered via the keypad. N.B. leading zeros must be included. If no match
is found the data that follows is ignored.

The next characters received (up to 4 max) are decoded as the 'label', i.e. which variable in the Process Amplifier is
to be acted upon. If the label is received incorrectly and cannot be decoded the Process Amplifier will return a '?'
followed by a C.R. character. If the received label is followed by a C.R. the Process Amplifier will return the current
value of the variable in question. Because there is no hardware handshaking, all transmission from the Process

Amplifier is performed one character at a time upon receiving a Null character (Chr$0) prompt from the Host
system. Thus for every character transmitted by the Process Amplifier a prompt character is required from
the host. The output from the Process Amplifier is an ASCII string of sixteen characters the last one being C.R. The

first four characters are the Station No. (with leading zeros if necessary) followed by a space. The label then follows

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with spaces added if required to make a total of four characters. The next seven characters is the numerical value
of the required variable with polarity, spaces, d.p. and leading zeros added as required.If the received label is
followed by an '=' character the Process Amplifier accepts the following numerical data (which must be terminated
by a C.R.) and updates the variable in question and returns a C.R. character to the host when prompted. Data input
is reasonably flexible. If all five digits are entered, no decimal point need be included. If less than five digits are
entered with no decimal point then the last digit is assumed to be the units.

Under normal circumstances the EEPROM in the Process Amplifier continually refreshes the working RAM. However,
it can be disabled via the serial input, by sending the instruction 'DROM = 256' after the Station No. In this condition
all read/write operations to or from the EEPROM are inhibited. There are two instructions which will re-enable the
EEPROM:

1. 'ERRD' - this performs a read from the EEPROM and updates the working RAM with the contents of the EEPROM.

2. 'ERWR' - this instruction writes the new RAM values into the EEPROM.

In both cases the EEPROM continues to refresh the RAM.

Instruction Set for ASCII Serial Communications

Request for data:

DATA sent to Process Amplifier Data returned from Process Amplifier

CR xxx

Station No.

CR xxx

Station No.

DISP CR

label

DOSP CR

incorrect label

xxx 'SPACE'

Station No.

xxx 'SPACE'

Station No.

DISP

label

DOSP

incorrect

label

YYYYYY CR

numerical value

'SPACE' ? CR

DATA sent to Process Amplifier Data returned from Process Amplifier

CR xxx

Station No..label

CR xxx
Station No.,

SP1 = 100.0

numerical value

SP3 = 100.0
incorrect label

numerical value

CR

?CR

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Table 5.1

Labels

DISP
SP1
IF1
SP2
IF2
HYS
OA
At
DA
OPL
OPH
DP
SDST
DROM
ERRD
ERWR
RLYS
RES
TARE

PKR

Description

REQUEST DISPLAY READING
SET POINT 1 (SP1)
IN-FLIGHT 1 (IF1)
SET POINT 2 (SP2)
IN-FLIGHT 2 (IF2)
HYSTERESIS (HYS)
OUTPUT ACTION (OA)
AUTO TARE (At)
DISPLAY AVERAGES (dA)
OUTPUT LOW (OPL)
OUTPUT HIGH (OPH)
DECIMAL POINT (dP r)
CAN NOT BE WRITTEN TO (SDST/CP)
DISABLE EEPROM (DROM = 256)
ENABLE EEPROM AND READ FROM IT
ENABLE EEPROM AND WRITE TO IT
OUTPUT RELAY STATUS ( 0 = BOTH OFF, 1 = RELAY 1 ON, 2 = RELAY 2 ON, 3 = BOTH RELAYS ON)
OUTPUT RELAY RESET
AUTO TARE

PEAK HOLD RESET

Process Amplifier Printer Format

(CP must be set between 0 - 127)
Printer selection enables the Process Amplifier to print its current display value to a printer via its communications
port. This display value can either be assigned a date and time stamp and/or a log number depending on the user
set options entered under mnemonic 'CP'. The log number can be reset or preset using the mnemonic 'Ln'. This value
is not saved on power fail. A label can be suffixed to the printed display value using the mnemonic 'LAb'. A large
range of labels are available to the user.
The time and date are set in the TDP printer itself using its own menu. The printer allows the entry of an additional
custom text message.

Three connections are required between the Process Amplifier communications port and the printer with a
maximum cable length of 100 meters. (See Chapter 5 Figure 5.11 for Details)

All standard Process Amplifier options are available with the exception of the communications modules, which
cannot be connected when the printer option is used.

Additional Mnemonics for the Printer Operation:

When the printer option is fitted further mnemonics are included in the normal range. After the dP r mnemonic are
the following: -

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CP

0

1

2

3

At this mnemonic the printer type and print format number is selected. This number
being
appropriate to the type of printer used. Details are advised with each type of printer
selected.
Present types available are: - For the ITT IPP-144-40E printer the following numbers apply

Prints a sequential log number with the current display and unit of measure
e.g. 00014 0011.3 tonne

Prints date and time with a sequential log number, current display and unit of measure
e.g. 00015 0001.7 tonne

05.03.2007 05:06

Prints a sequential log number, current display, unit of measure with customer text
message No 1
e.g. MANTRACOURT ELECTRONICS PROCESS AMPLIFIER PRINTER

00012 00023. tonne

Prints date and time with a sequential log number, current display, unit of measure and a
customer text message No.1
e.g. MANTRACOURT ELECTRONICS PROCESS AMPLIFIER PRINTER

00013 0023. tonne

05.03.2007 12:03:04

4-7

8,9
10

12
127

Digitec 6700 series

Amplicon AP24 and AP40
Eltron LP2142 - (The label file must be called 'MEL' and the label must contain a LOG
NUMBER, THE DISPLAY VARIABLE & a LABEL (not zero).
LOG NUMBER, THE DISPLAY VARIABLE & a LABEL (not zero)
ASCII string on print command

Continuous ASCII stream of the display data, transmitted on every display update

Note: 1
Note: 2

9 gives an inverted print out
It is anticipated that further types of printer will be added, and additional numbers

will be allocated as appropriate

Lab

Label Number

A number can be selected for the appropriate unit of measure. See table below:

Note: 0 = NO LABEL

0 BLANK
1 Deg R
2 Deg C
3 Deg F
4 Kelvin
5 Ib/in 2
6 bar
7 mbar
8 kPa
9 atm
10 mmHg
11 inHg
12 inH2O
13 cmHg

14 mm
15 Wh
16 Db
17 tonne
18 m
19 in
20 ft
21 degrees
22 L/s
23 L/min
24 L/h
25 gals/s
26 gal/min
27 gal/h

28 %RH
29 gram
30 kg
31 lb
32 kWh
33 mile/h
34 %
35 ton
36 %Dev
37 W
38 kW
39 MW
40 pH
41 ppm

42 uS
43 Ohms
44 m/s
45 ft/min
46 RPM
47 RPMx10
48 RPMx100
49 cos @
50 km/h
51 ms
52 RPM1000
53 Hz
54 kHz
55 V DC

56 mV DC
57 A DC
58 mA DC
59 V AC
60 mV AC
61 A AC
62 N
63 spare
64 spare
65 spare
66 spare
67 knots
68 s

Ln Log Number
A range of numbers 0 to 19,999 is available. Any sequential number logging
activity can be preset as desired, between these numbers. The number will
reset to zero after 19,999. The log number is not saved on power fail
and resets to zero on power up.

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Chapter 6 The Amplifier Displays

A range of display /keypad variants are offered to accommodate both surface mount and rack versions of the
Process Amplifiers.

Rack Amplifiers
The two versions of the rack amplifier RUA1 and RUA2, have different display fixture requirements. The RUA1 is
provided with an FCC type shuttered socket on the front of each channel, into which a hand held programmer (LP2)
is inserted and latched and which can be removed, once programming is complete. In common with all amplifier
displays a 4.5 digit LCD display and keypad is provided to allow for common programming procedures.
The RUA2 is fitted with an On-Board front panel mounted display and programming facility of similar layout to the
(LP2). However in this case the programming is achieved by inserting a probe through the 2.2mm holes in the front
panel.

Figure 6.1 Programmer Unit Pane l
Layout (RUA2)

Figure 6.2 LP2 Remote Ha n d H e ld
Programmer Unit

When in the programming mode, a Flashing bar symbol ‘-’ is indicated in the top left hand corner of the display.
Surface Mount Amplifiers
A security link option on the rear of the display pcb, is available to prevent the change of data where required.
Where surface mount amplifiers are used, options are available to program with the (LP2), from the FCC socket
mounted on the main pcb, or by fitting an On-Board display module (LP1) with nylon stand off pillars, onto the main
pcb, using the same FCC socket. The layout of the keypad remains similar throughout.

Figure 6.3 Programmer Unit Panel Layout (LP1)

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Control Panel Guide

d

Used to scroll through and change the set up data by displaying mnemonics for each

configurable parameter, followed by the appropriate data.
When in programming mode it should be noted that the first digit in the display
might not be visible, but the program indicator --- will be flashing to indicate that
the instrument is in programming mode, even though no digits can be seen to be
flashing.

b

Selects the display digit required. Selection value is indicated by a flashing digit

and flashing program indicator.

c

Increments each selected display digit 0-9.

Pressing the c key under programming conditions will display the leading digit as

either 1, -1, or a blank display for zero.

a

Resets the display to the input variable and enters new data in the LCA15 memory.

Returns the display to the current value after Hold.

If during the programming sequence, selection is not completed, the display will
revert to the input variable after 2 minutes.

The display and controls on the front panel mounted version (RL2) operate in a
similar way to the remote display/programmer described above, with program

buttons being accessed through 2.2mm holes in the panel.

A Large Keypad Panel Mount Display is also available which can be mounted to the lid of the ABS case of the
surface mount amplifier, or with the necessary driver hardware, can be fitted to a stainless steel panel and used
remotely.

Figure 6.4 Programmer Unit Pane l L ay o ut

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Figure 6.5 Display Module Connections and Switch Settings

Table 6.1

Position ON

Function

Factory Settings

1

Enables Keys b and c

ON

2

Enables all Program Keys

d b c & a

ON

3

Enables e and f Function Keys

ON

4

Enables g and h Function Keys

ON

5

Forces display to always be GROSS
VALUE only

OFF 6 Forces display to always be NET VALUE
only

OFF

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Chapter 7 Programming The Amplifiers

Section 1 - Display & Programming Mnemonics

As described in the previous chapter, there is common symbol and keypad layout for programming all the variants
whether it be rack or surface mounting units.

Table 7.1 Configurable Parameters for Process Input

The standard range of programming mnemonics is show in the following table: -

Display Function

(In order of Display)

Range

Function

PASS

SP1

SP2

HYS

OL

OA

1111

Set Point 1

Set Point 2

Hysteresis

Output Latch

Output Action
(Inversion)
of SP1 & SP2

±19999

2000

ADCL
ADCH

-19999 to +19999

-19999 to +19999

0 to +19999 in real
display units

Latch set by code in
range 0-3 as shown in
Table 5.1

Action set by code in
range 0-15 as shown in
Table 5.2

Security Password. Correct value required proceeding

further (special numbers on request).
Password for Analogue Input Calibration routine giving
access to:
A to D Calibration Low value
A to D Calibration High value
Sets first output trip or control
(Chapter 5 refers)

Sets second output trip or control (Chapter 5 refers)

Sets hysteresis applied to SP1 and SP2 when used for
ON/OFF control units (Chapter 5 refers)

Allows SP1 and/or SP2 to be latched
until reset externally, from the keypad or via
communications port.

Sets output relay action. Can be set
to ‘normal’ or ‘inverted’ operation for either or both set
points. Gives fail safe operation of any alarm
combination, High-High, High-Low, Low-High & Low­Low. (Chapter 5 refers) Also selects whether analogue
outputs controlled by display module or PID element in
CPU Inversion of the analogue output.

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Pb

Ont

(It)

OFFt

(dt)

dA

Proportional Band

Output on delay

Integral

Output off
delay

Derivative
Time

Display
Averaging &
Peak Hold

0 to 1024

0 to 255

0 to 6000

0 to 255

0 to 255

0 to 15

'O' Selects 'Ont'.'Offt' or 'da' function 1-1023 Selects PID
mode and value of proportional band, in displayed units.
1024 Selects Integral 'It' only control

When PID is not used, (PB=0) the mnemonic (Ont) sets a
delay on time for SP1 & SP2. Set in seconds. Or
Selects integral value for PID control in seconds/repeat.
0= Proportional only control.
When PID is not used, (PB=0) the mnemonic (Offt) sets a
delay off time for SP1 & SP2 set in seconds. Or

Selects derivative value for PID control. 0 = OFF (no
derivative)

When PID is not used, (PB=0) the mnemonic (dA) sets a
display averaging update rate.
Readings may be averaged over a number of updates and
can be set as follows:
Display update time
0 = 1 readings (standard) approx. 0.4S
1 = 2 readings approx. 0.8S
2 = 4 readings approx. 1.6S
3 = 8 readings approx. 3.2S
4 = 16 readings approx. 6.4S
5 = 32 readings approx. 12.8S
6 = 64 readings approx. 25.6S
7 = Fast update mode approx. 0.1S A peak hold
function, which will display the highest recorded value
of the measured input, can be set by adding 8 to any of
the above settings. To reset Peak Hold press the b key,
then within 1 second, press the c key. Can also be reset
externally or via comms.

Or

(ct)

IPL

(IpOf)

IPH

Cycle time

Input Low

Offset Factor

Input High

1 to 255

-19999 to 19999

-19999 to 19999

-19999 to +19999

Set time in seconds for one

complete power cycle output of PID
power (time proportioned through
SP1).

For linear analogue inputs, used to
set the required display reading
when an analogue input is at its
minimum value. Also provides an
OFFSET for value for non linear
analogue Inputs.Or

For rate/totaliser inputs, the value
provides an offset or for totaliser, a
count reset value.

For linear analogue inputs, used to
set the required display reading
when an analogue input is at its
maximum value.Or

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(IpSf)

OPL

OPH

Scale Factor

Output Low

Output High

0 - 1.9999

-19999 to+19999

-19999 to+19999

Applies a variable gain to the rate
/totaliser reading 1.0000 for unity
(0.5000 to halve the display value.)

Used to set the display value at
which the minimum analogue output
is required.

Used to set the display value at
which the maximum analogue
output is required.

IP

Input Select

0 to 65

Used to set up the UAB for the input

to be monitored. (See Sections 2-4
of this Chapter)

dP-r Decimal

Point &
Reset

range 0 to 61
Code dP Position
0 19999
1 1.9999
2 19.999
3 199.99
4 1999.9
5 19999.

8
16

32

To set the required position of the
decimal point on the display and to
set the rear contact actions for
count
reset &/or peak hold &/or latched
relay reset &/or print. Or any
combination of these.

To make reset input active on any or
all of the following add to dP-r No.
as follows:
Reset totaliser count
Reset latched relays or peak hold

Activate print

(Note: Latched relays are not available with peak hold)

cP Comms

Protocol

0-129 Comms Protocol (see Chapter 5) (0

to 127 = Printer
127 = Continuous ASCII stream of
display data transmitted on every
display update.
128 = 'Fast' MANTRABUS
129 = 'ASCII'

SdSt

(Lab)

Serial Device

Station

Option 0-75

Set by code in range 0 to 254

Used to set individual address of

each UAB when communications
port is used. NB: changes can only
be made via the keypad (Chapter 5
refers).

Label number to print engineering
units. (See Chapter 5)

Ln Log Number 0-19,999 To set Log number. Reset on power

up.

Inp

Input

Variable

Automatically returns the UAB to

the input again after scrolling
sequence is completed and updates
permanent memory.

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RS Display

Resolution

0-255 Sets display resolution

0 & 1 = Resolution of 1 least
significant digit.
2-255 = Resolution setting of last

digits.

Note: Invalid parameter values - Should an invalid figure be entered against any parameter, it will be rejected and
the display will return to show the parameter.
* This number range will increase as new printer options become available.

Table 7.2 Configurable Parameters for Dual Input Modules

Mnemonic

InPA
InPb
SP1
SP2
PASSWORD
HYS
OL
OA
Pb
Ont or It
OFFt or dt
dA or ct
IPLA
IPHA
IPLb
IPHb
SF
DF
OFFS

OPL

Descriptions

Live display of input 'A'
Live display of input 'B'
As for single channel inputs, except when Ab = 4, when SP1 = value set by input 'b'
As for single channel inputs
1111
As for single channel inputs
As for single channel inputs
As for single channel inputs
As for single channel inputs
As for single channel inputs
As for single channel inputs
As for single channel inputs except add 400mS to all display update time
Input low scale factor for 'A' input (no IPOF)
Input high scale factor for 'A' input (no IPSF)
Input low scale factor for 'B' input
Input high scale factor for 'B' input
Scale factor, unity being 1.0000 except when AB = 3, then unity = 001.00
Division factor, divides result of function x scale factor, by the value set
Offset provides a display offset

As for single channel inputs

dPB

Cp
SdSt/Lab
Ln
rS

dis

Sets decimal point position for 'B' input display (for display purposes only)

For single channel inputs
For single channel inputs
For single channel inputs
For single channel inputs

Returns to A, B, function display

Ab

0
1
2
3
4

Function

A + B
A - B
A x B
A/B

Display = Input A, SP1 = Input B

Display =

(Result of A, B Function) x SF

DF

Configurable Parameters fo r UAFLC - Fast Strain Gauge Input Module

Note: Password Protection
To prevent unauthorised changes to parameters, other than Set Points and In-Flight compensation settings, a 4 digit
password number must be entered. Scrolling through the Set Points and In Flight settings until ‘PASS’ is displayed
accesses the number. At this point, it is necessary to enter either the factory set number 1111 in D2 - D5 positions,
or the password number specifically ordered by the customer.

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Table 7.3 Configurable Parameters

CODE

VALUE

FUNCTION

Inp
P

t

±19999
±19999

±19999

Live input reading
Peak reading

Trough (valley) reading

Section 2 - Setting the Conditions for Linear Inputs

To monitor the analogue input, the unit must be programmed for the appropriate input module and select the
required resolution.

Linear Input Code Selection
The two input code (IP) options offer scaling of the input for:
IP = 0. Scaling between -19999 to +19999
IP = 1. Scaling divide by 10, -1999 to +1999
Linear Input Scaling
Input scaling factors are set by the user a nd determine the di splay ra nge over w hich the ana logue mo dule operates .
(IPL) Input Low - This sets the displayed value at the modules minimum input. (IPH) Input High - This sets the
displayed value at maximum input. If the calculated display is outside the range defined by IPL and IPH, the
analogue input will be over-ranged.
Example: Assume a 4-20mA input module is required to provide an input of 4mA at 100 and 20mA at 1500.
Set IPL at 100 and IPH at 1500
It will be necessary to determine IPL and IPH by gra phic al o r ma thema ti ca l means i f t he know n displa y values do not
coincide with the minimum and/or maximum analogue input.

Figure 7.1 Linear Inpu t Sc aling

Method of Calculating IPL and IPH from any known input values

IPL= Low - (Display span) (Low input - Min input)

Display (High input - Low input)

IPH= High + (Display Span) (Max input - High input)

Display (High input - Low input)
High input = Known high input value
Low input = Known low input value
Min input = Lowest measurable value of input PCB fitted
Max input = Highest measurable value of input PCB fitted
Display span = Highest required display value -minus lowest required display value.
Example:
Using a 4.20mA input PCB requiring a display of 200 at 6mA and 8000 at 12mA

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Min

Known Low

Known High

Max

Display Value
Input Value

IPL
0mA

200
6mA

8000
12mA

IPH
20mA

IPL= 200

-((7800) (6 - 4))
(12 -6)

= 200-(7800 x 2)

(6)

IPL= 200 - 2600
IPL = -2400

IPH = 8000

+ (7800) (20 - 12)

(12 - 6)

= 8000+ (7800 x 8)

(6)

IPH = 8000 + 10400
IPH = 18400

Note 1: If IPL or IPH are greater than ±19999 then divide both IPL and IPLH by 10, this will give less resolution.
Note 2: Decimal point can be placed anywhere to suit reading.

Input Calibration Rou tine

Note: It is of the utmost importance that this routine is followed carefully when setting up the instrument with
Analogue Inputs.

Most analogue inputs have predetermined calibration constants, which have been written into the software at the
time of manufacture; the details of these calibration values are written on a pre-printed white label on each input
board against ADCL and ADCH.
The values shown on the labels are to be entered in the following manner: -

Scroll to the PASSWORD mnemonic and enter the number - 2000. Press the scroll key, the display will then show the
mnemonic ‘ADCL’ (A to D Calibration Low value), this prompts the entry of the value written on the label. Once this
value has been entered, scroll to the mnemonic ‘ADCH’ (A to D Calibration High value), which again prompts the
entry of the value written on the label.

Note: It is important that the c key is used during this procedure; otherwise the software will attempt to calculate
new values for ADCL and ADCH.

Section 3 - The Temperature Input M o d ules (UAT1 & UAT2)

The UAB provides very accurate temperature measurement from thermocouple or resistance thermometer inputs.
The microprocessor line arises the input signal with accuracy ensured by the application of a polynomial expression.
This arrangement provides a high-resolution digital readout in units of Centigrade, Fahrenheit or Kelvin, as required.
Resolution of either 0.1 or 1.0 degrees can be selected from the keypad.
The input type must be selected on ordering as detailed in the ordering codes shown above (also see Chapter 8).

Setting Up Codes for Thermocouples
To monitor temperature inputs from a thermocouple, set the (IP) code to select the precalibrated analogue input
module, together with the required display value and resolution (See Table 7.2).

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Thermocouple Cold Junction Compensation
The UATx modules are supplied with a cold junction sensor. For maximum accuracy the cold junction sensor should
be placed as close as possible to the junction of copper or non-thermocouple connector cables. This sensor requires
to be matched to the UATx otherwise a maximum offset error or ± 2.5% at room temperature may be incurred. To
calibrate this offset follow the procedure below: -

1. Short the thermocouple input connection 1 & 2

2. Connect the cold junction sensor across connections 3 & 4

3. Ensure that IPL is at zero

4. Using a reference thermometer, placed so that it is measuring the cold junction sensor temperature, allow the
sensor & thermometer to reach thermal equilibrium. Note this temperature.

5. Note the temperature that the UAB display is reading, the difference between the two noted values should be
entered into IPL.

6. After entering this value the reading of the reference thermometer & UAB should be similar.

Any further changes to IPL for introducing a system offset to compensate for minor temperature discrepancies
between cold junction and the thermocouple cable for example should be added to the value.

Should a display be required in degrees Kelvin, it will be necessary to select the (IP) on 0ºC and set the (IPL) to
+273ºC.

Table 7.4 - Thermocouple Input Codes

Thermocouple Type

Range

Readout

Resolution

Code Module

Inputs

J

K

-170ºC to
+760ºC

-230ºC to
+1300ºC

Centigrade

Fahrenheit

Centigrade

Fahrenheit

0.1

1.0

0.1

1.0

0.1

1.0

0.1

1.0

30
31
46
47

32
33
48
49

UAT2

UAT1

Resistance Thermometers
This is normally a PT100 type of RTD.
Resistance thermometer connections to the UAB depend upon the lead configuration, which is itself determined by
the required level of accuracy.

For applications where a high accuracy measurement is not required a 2 or 3 wire installation is adequate. For high
accuracy, a 4-wire connection should be used to compensate for lead resistance and connector losses.

Setting up Codes for Resistance Thermometers
To monitor temperature inputs from an RTD, set the IP code to select the pre calibrated analogue input module,
together with the required display value and resolution as summarised below.

Table 7.5

Display Units

Resolution

Code

Centigrade

Centigrade
Fahrenheit

Fahrenheit

0.1

1.0

0.1

1.0

60

61
58

59

IPL must be set to zero fo r any of these display options, however, if any offset factor is required e.g. to co mpensate for minor temperature
discrepancies between cold junction and thermocouple cable, set the (IPL) to the required offset value.

Should a display be required in degrees Kelvin, it will be necessary to select the (IP) on 0ºC and set the (IPL)
to+273ºC.

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Section 4 - The Rate/Totaliser Input Module (UARTL)

General Description
The module allows the monitoring of frequency, RPM, period or pulse totalising from a wide range of transducers,
the details of which are shown in Table 7.5

The module can be configured for any of the functions referred to in Table 7.5 and transducer types, by DIL
switches keypad set parameters and connections. See Table 7.6

Setting up the Input

The types of input chosen will depend upon the sensor requirements and can be determined from the table below:

Table 7.6

Type

High Pulse
Level

Threshold

Hysteresis

Input Impedance

Excitation

DCV

ACV1

ACV2

AC/DCmV

NAMUR

5-30V

±30mV to 35V

±3V to 35V

±15mV - 5V

2.5 to 17mA

2.5V

*20mV-2V

*2.5V-35V

8mV

1.6mA

1.0V

*5mV to 180mV

*120mV- 2.0V

2mV

90µA

100K min or 5K6

5K min

5K min

10M

680R

5V, 50mA

5V, 50mA

5V, 50mA

5V, 50mA

8.3V, 50mA

*Adjustable by potentiometer.
When selecting the type of input required by the sensor, from Table 7.3, set the
DIL switches on SW1, as shown in Table 7.4 (The RTL layout diagram Chapter 4 Figure 4.4 refers).

Table 7.7 Input Co n fig u ra tio n

Type SW1) Switch Settings

Legend

ACV1
ACV2
AC/DC mV
NAMUR
DCV (pull up for volt free or contact
type inputs)
DCV (pull down for voltage fed
inputs up to 30V)
DCV (Standard CMOS type input)

* *

1 2 3 4 5 6 7 8
1 0 1 0 1 x 0 1
1 1 0 0 1 x 0 1
0 0 1 0 1 x 0 1
1 1 0 0 1 x 0 1

1 0 0 1 0 x 0 1

1 0 0 0 1 x 0 1
1 0 0 0 0 x 0 1

1 - Switch
‘on’

0 - Switch
‘off’

x - See Note 1

∗

- See Note 2

Note 1: Switch 6 selects a low pass filter with a 10uS time constant on DCV Input only
Note 2: For totalising, set switch 7 'on' and 8 'off' on all ranges

Setting the Prescaler

Depending upon the rate of the frequency, RPM or period to be measured or the maximum desired count of the
totaliser, it will be necessary to select the prescaler by setting the DIL switches on SW2 as shown in the Table 7.7
below. (See the UARTL layout Figure 4.4)

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Table 7.8

Prescaler

(SW2) Switch Settings

Legend

Divide x 1
Divide x 10
Divide x 100
Divide x 1,000

Divide x 10,000

1 2 3 4 5 6

x 1 0 0 0 0
x 0 1 0 0 0
x 0 0 1 0 0
x 0 0 0 1 0

x 0 0 0 0 1

1 - Switch ‘on’

0 - Switch ‘off’
x - Not used

Note 1: Select only one switch to the ‘on’ position
Note 2: It will be necessary to increase the prescale divide factor by setting the switch to a higher position if the
input is over range.

Rate Measurement

Rate measurements are achieved by measuring the period between input signals.
From this, period measurements, frequency and RPM can be derived.
These measurements can be scaled to any desired display range by setting scale and offset factors from the keypad
together with a prescaler set from DIL switches on the module.
SW1 7 off, 8 on, and IP set by keypad to Table 7.8

Period (Time measurement between pulses)

Period measurements from 20µS to 1999.9mS can be monitored by means of prescaler and is divided into 2 ranges:

Input Code

The input code (IP) sets the type of rate measurement required i.e. Period, Frequency, and RPM and is selected
from the table below: -

Table 7.9

Type

Code

Divide by 10

Frequency
RPM High Resolutio n
RPM
Period in mS

Period in µS

12
14
16
2

6

13
15
17
3

7

(i) Period in mSeconds
Table 7.10 Period mS Fixed Scale

Prescale

Divide by 1

Divide by 10

Divide by 100

Divide by 1000

Divide by 10000

Input

Resolution

Noise

0.2mS to

1999.9mS

0.1mS

0.1mS

0.02mS
to199.99mS

0.01mS

0.01mS

0.02mS
to19.999mS

0.001mS

0.001mS

20µS to1999.9µS

0.1µS

0.1µS

20µS
to 199.99µS

0.01µS

0.01µS

(ii) Period in µSeco nds
Table 7.11 Period µS Unity Sca le (IPSF 1.0000)

Prescale

Divide by 1

Divide by 10

Divide by 100

Input

Resolution

Noise

150µS to
19999µS

1.0µS

3.0µS

20µS to

999.9µS

0.1µS

0.3µS

20µS to

199.99µS

0.01µS

0.03µS

NB: These tables only apply when the scale factor is set to unity and the offset is zero.

Frequency

Frequency measurements from 0.48Hz to 50KHz can be monitored be means of prescaler.

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Table 7.12

Prescale
Range

Divide by 1

Divide by 10

Divide by 100

Divide by 1000

Full input

Range
Optimum

Input Range

0.48Hz

to199.99Hz

0.48Hz

to100.00Hz

4.8Hz

to1999.9Hz

4.8Hz to

1KHz

48Hz

to19.999KHz
48Hz to

10KHz

480Hz

50KHz
480Hz

50KHz

Figure 7.2 Frequency Unity Scale I n p uts

Worst noise level = 3 x resolution for the same i nput frequency

Note: This applies when th e scale factor is s et to unity and the offset is z ero.

RPM

RPM measurements from 28.8 to 3 million can be monitored be means of prescaler and high-resolution range and
represented by 1 pulse per revolution.

Table 7.13 RPM Unity Scal e

Prescale

Range

Divide by 1

High (0.1)

Resolution

Divide by 1

Divide by 10

Divide by 100

Divide by 1000

Full Input
Range

Optimum

28.8 to

1999.9

28.8 to 500

29 to
19999

29 to 7000

28.8 to 19999 x
10

28.8 x 10 to

700 x 10

28.8

100

19999 x100

28.8 x100 to
7000 x100

28.8

x 1000

3000 x 1000

28.8 x 1000
3000 x 1000

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Figure 7.3 RPM Unity Scale Ra n ge

Worst Noise Level = 3 x resolution for the same input
Input RPM

Count/Rate Scaling & Scaling/Rate

The count/rate input can be represented over any display range by applying keypad set parameters known as scale
and offset factors.
The actual count/rate would be displayed when the scale factor is unity (1.0000) and offset factor is zero.
The scale factor applies a variable gain to the count/rate and is set by the mnemonic (IPSF)

IPSF is calculated as follows:

IPSF = Required change in display digits
Change in count/rate value

IPSF has a range of 0.0001 to 1.9999

The offset factor is added to or subtracted from zero offset displayed value and is set by the mnemonic (IPOF).

IPOF is calculated as follows:
IPOF = required display digits - (IPSF x required count/rate value)

IPOF has a range from -12767 to +19999

Scaling Example: -

For a low frequency input of 139Hz, a display of 46 litres per minute is required for a high frequency input of 710Hz;
a display of 250 litres per minute is required.

Scale Factor - IPSF = 250 - 46 204
710 - 139 = 571 = 0.3573
Therefore IPSF = 0.3573

Offset Factor - IPOF = 250 - (0.3573 x 710) = -3.683
Therefore IPOF = - 3.683

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RTL Module Inputs
Figure 7.4 RTL Module Inputs

The RTL module can accept four types of input as follows: -

Notes: Minimum period equals 20µS
: For ACV2 inputs over 6V with greater than 50% 'Mark' use ACV1.

Section 5 - Programmin g th e O utp ut Fun ctio ns

Set Points (SP)

Set points are used to produce output signals at any required value so that the operation of the monitored process
can be maintained to preset levels. Any excursion beyond set points will activate the relay or relays, to provide
alarm or initiate control as required.
Two set points (SP1) and (SP2) can be programmed to suit different applications. The actions of either or both set
points can inverted if required.
For normal operation the set point output is active until the input reaches the set point level. In this condition when
the input value is less than the set point, the SP indicator is on and the output relay is energised producing a closed
circuit on a normally open contact. When the set point value is reached, the SP indicator is off and the relay is de­energised producing an open circuit output.
For an inverted operation the reverse conditions apply.
Normal and inverted action is determined by the direction of the input value as it changes.
For example: In alarm applications.

A High-High operation allows for a rising input value to operate on two set points to define an acceptable quantity,
weight or band of operation.

A Low-Low operation operates on a falling value.

A High-Low operation will operate on a rising or falling value, setting a 'band' by one set point operating normally
and the other being an inverted action.

Hysteresis (HYS)

Once a Hysteresis value has been set, it will be applied to both set points entered. It is effective for both normal
and inverted action.

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When Hysteresis is applied to set points with normal output action, the input is allowed to rise to the set point
value and the output is then turned off. The output is held off until the input value has dropped to the set point
minus the Hysteresis value.

Latching Outputs (O L )

The latching facility allows the relay module output to be held until reset either by keypad, external remote or via
the communications port.
Latching is applied to the off status of the relay SP1 or SP2.

Table 7.14 Output Latch Codes (OL)

SP1

SP2

Code

Unlatched

Latched
Unlatched

Latched

Unlatched

Unlatched
Latched

Latched

0

1
2

3

Display OL and enter required code using the keypad as detailed in Chapter 3.

Output Action (OA)

The output action facility allows the user to determine whether set points produce normal or inverted output
operation. If an analogue output module is also fitted, the output action function determine whether the modules
output is inverted or not and if PID power level is also directed to the analogue output. The output action (OA) is
entered by a code to suit the requirements of the user.

Output Action options are available.
The value of the OA to be entered in the algebraic sum of the following components:

Table 7.15 Output Action Codes (OA)

SP1 Inverted

SP2 Inverted
PID on Analogue Output

AN-OP Inverted

= 1

= 2
= 4

= 8

Example 1: If SP1 requires to be inverted and PID on the analogue output, enter 4 + 1 = 5.
Example 2: To invert the analogue output and invert SP2, enter 8 + 2 = 10

Delay Timers

For applications where PID is not used (PB=0) and time delayed outputs are specified, 'ON' and delay 'OFF' times can
be set via the keypad.

Delay On Timer

The delay on timer applies to SP1 and SP2 and initiates a delay before either set point can turn on. The delay timer
will be reset if the off state is called for during the delay time. This is set by ‘ont’ code in seconds ranging from 0 to

255.

Delay Off Timer

The delay off timer applies to SP1 and SP2 and initiates a delay before either set point can turn off. The delay timer
will be reset is the on state is called for during the delay time. This is set by ‘oFFt’ code in seconds ranging from 0
to 255.

PID Functions

The four components of a PID function are proportional band (Pb), integral time (It) and derivative time (dt). The
cycle time is set by input code (ct).
To set the proportional band, display (Pb) and enter the required operating band in terms of the displayed units as
described in Chapter 3.

When PB is selected, the Relay 1 (SP1) is used by the PID as a time proportional output.

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PID Empirical Tuning

1. Set Pb to the max 1023 and ct to a low value consistent with the mechanical constraints and system
requirements.

2. Vary the input or the set point and note the system response, reduce the Pb by half and repeat, continue to
reduce Pb until the process starts to oscillate, then increase Pb until it is stable.

3. Set the integral time to max (6000) and reduce it in stages until the proportional offset is eliminated. There
should be a slow oscillation around set point.

4. Set a low value of dt and gradually increase this until the slow oscillation ceases.

5. Lower the value of Pb and increase the value of dt after each change, disturb the process and check that control
is maintained. The final setting will be that which gives satisfactory control in the presence of these small
disturbances.

6. The following equation must be applied to ensure that the system operates correctly

ct

Pb x it

must be greater than the constant .00012255 where Pb is expressed in whole numbers, ignoring any decimal point
setting.
i.e. 100.0 will be taken as 1000

Section 6 - Scaling th e Analogue Outp uts
Output Scaling

Output scaling factors are set by the user and determine the display range over which the analogue module
operates.
(OPL) Output Low - This sets the displayed value at the modules minimum output.
(OPH) Output High - This sets the displayed value at maximum output. If the display is outside the range defined by
OPL and OPH, the analogue output will remain constant at its minimum or maximum output value.

Example: Assume a 4-20mA output module is required to provide an output of 4mA for 1000Kg and 20mA for 6500Kg.
Set OPL to 1000 and OPH to 6500
It will be necessary to determine OPL and OPH by graphical or mathematical means if the known display values do
not coincide with the minimum and/or maximum analogue output.

Figure 7.5 Analogue Output

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Method of Calculating OP L & O PH fro m any known Output & Display Values

OPL = Low -(Display span) (Low output - Min output)

Display (High output - Low output)

OPH = High + (Display Span) (Max output - High output)

Display (High output - Low output)

Low output = Known low output
High output = Known high output
Min output = Lowest measurable value of output module
Max output = Highest measurable value of output module
Display span = Highest required display value minus lowest required display value.

Example:
Using a 4.20mA output module where it is required to produce 6mA at a display value of 400 and 18mA at a display
value of 1100.

OPL = 400

-( (700) (6 - 4) )
(18 -6)

= 400-(1400)

12
OPL = 400 - 116.66
OPL = 283.34

OPH = 1100

+700) (20 - 18)

(18 - 6)

=1100+(700 x 2)

12

OPH =1100 +116.66

OPH =1216.66

Note 1: OPH must be greater than OPL
Note 2: If OPL or OPH are greater than ±19999 then divide both OPL and OPH by 10, this will give less resolution.
Decimal point can be placed anywhere to suit reading.
Decimal point can be placed anywhere to suit reading.

Calibration

Re calibration can be made by adjusting the gain and offset potentiometers, or by adjusting the values of OP LO and
OP Hi.
An offset can be achieved by increasing the values of both OP LO and OP Hi, and the gain by increasing the range
between OP LO and OP Hi.

Figure 7.6 Showing th e Potentiometers for Gain and Offse t Adj u stment

As described in Chapter 5 the Fast Analogue Output module is specifically designed to be used when the fast strain
gauge input module, (UAFLC) is fitted. (However due to physical constraints the module can be used with the
Universal Amplifier in its surface mount configuration only.) Although output scaling follows a similar procedure
to that of the standard analogue outputs, the re calibration adjustments required to the fast analogue output
module are shown in the following diagram:

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Calibration

Re calibration can be made by adjusting the gain and offset potentiometers, or by adjusting the values of OPL and
OPH.
An offset can be achieved by increasing the values of both OPL and OPH, and the gain by increasing the range
between OPL and OPH.

Figure 7.7 Showing th e Potentiometers for Gain & Offset Adjustment

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Chapter 8 Order Codes

RUA Rack Mounted Universal Input Process Amplifier

Inputs
0 to 10Volts
0-20mA DC Volts
LDVT Input
Temperature Input Type K
Type J
PT100
Rate/Totaliser
Dual Channel LVDT Input
Dual Channel 4 to 20mA Input
Dual Channel 0 to 10V Input

Fast Strain Gauge

UADCV1
UADCA1
UALV1
UAT1
UAT2
UAPT
UARTL
UALV2
UADIA
UADIV

UAFLC

Comms/Printer Port

Communications 20mA Current Loop
RS232/485

RC1
RC3

Relay Module

Relay Output Module (2 x SPCO 500mA50V)

RR1

Amplifier/Display

Universal Amplifier for Remote Programmer (LP2)

Universal Amplifier with internal Programmer

Universal Amplifier for Remote Programmer (LP3)

RUA1

RUA2

RUA1-EX

Accessories

Rack PSU for RF1 & RF2
Rack for 12 Channels with Remote Programmer
Rack for 8 Channels with Internal Programmer
Blanking Panels for RF1
Blanking Panels for RF2
Remote Programmer for Standard & Fast Input
Module
Programmer for Hi Res Input Modules
VisualLink SCADA Software Full Version
VisualLink Runtime Key

VisualLink SCADA Software Demo

RS1
RF1
RF2
RB1
RB2

LP2
LP3
VLA
VLR

VDL

UAB Universal Amplifier

Description

Order Code

Universal Amplifier with 4-20mA/0-10V Analogue for
either ABS Case or DIN Rail Mounting

UAB

Inputs

0 to 10Volts

0-20mA DC Volts
LDVT Input
Temperature Input Type K
Type J
PT100
Rate/Totaliser
Fast Strain Gauge

UADCV1

UADCA1
UALV1
UAT1
UAT2
UAPT
UARTL
UAFLC

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Comms/Printer Port

Communications 20mA Current Loop
RS232/485

LC1
LC3

Relay Module

Relay Output Module (2 x SPCO 500mA50V)

LR1

Power Supplies AC & DC

AC Power Supply 110/120V or 220/240V AC

DC Power Supply 9-32V DC

LS1

LS3

Amplifier/Display

Display PCB for fitting to LAC ABS Case

LP1

Mounting & Cases

ABS Case with plain ABS Lid

Stainless Steel Case 220 x 160 x 85mm
Die Case 220 x 160 x 85mm
DIN Rail Mounting fixture for the LCB/UAB
Transparent Plastic Case Lid for ABS Case

LAB

LSS
LDC
D2
LTL

Accessories

Conformal Coating of PCBs
Remote Hand Held Programmer
Programmer for Hi Res Input Modules
VisualLink SCADA Software Full Version
VisualLink Runtime Key

VisualLink SCADA Software Demo

LCC
LP2
LP3
VLA
VLR

VDL

SMP Surface Mount Process Indicator & Controller

Inputs

0 to 10Volts

0-20mA DC Volts
LDVT Input
Temperature Input Type K
Type J
PT100
Rate/Totaliser
Dual Channel LVDT Input
Dual Channel 4 to 20mA Input
Dual Channel 0 to 10V Input

Fast Strain Gauge

UADCV1

UADCA1
UALV1
UAT1
UAT2
UAPT
UARTL
UALV2
UADIA
UADIV

UAFLC

Comms/Printer Port

Communications 20mA Current Loop

RS232/485

LC1

LC3

Relay Module

Relay Output Module (2 x SPCO 500mA50V)

LR1

Power Supplies AC & DC

AC Power Supply 110/120V or 220/240V AC

DC Power Supply 9-32V DC

LS1

LS3

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Amplifier/Display

Display PCB for fitting to LAC, ABS Case

As above (LCD) with backlight
Display PCB fitted with a driver for extended
distance working - 100 metres ABS Case

As (LCDR) with backlight

LCD

LCD/BL

LCDR

LCDR/BL

Mounting & Cases

ABS Case prepared for PCB with front label (no PCB

fitted)
DIN Rail Mounting fixture for the LCB/UAB

Stainless Steel mounting for display PCB

LAC
D2

LCS

Accessories

Conformal Coating of PCBs

VisualLink SCADA Software Full Version
VisualLink Runtime Key

VisualLink SCADA Software Demo

LCC

VLA
VLR

VDL

CE Approvals

European EMC Directive

Low Voltage Directive

2004/108/EC
BS EN 61326-1:2006
BS EN 61326-2-3:2006

2006/95/EC
BS EN 61010-1:2001
Rated for Basic Insulation
Normal Condition
Pollution Degree 2
Permanently Connected

Insulation Category lll

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Instrument Setup Record Sheet

Product

Product Code

Serial No

Tag No

Date

Location

Measurement type, range & engineering units

Communication / Baud Rate

UAB/RUA/SMP

Value

PASS

SP1

SP2

HYS

OL

OA

Pb

Ont (It)

OFFt (dt)

dA (Ct)

IPL (IPOF)

IPH (IPSF)

OPL

OPH

IP

dP r

CP

SdSt or LAb

Ln (for printer)

rS

W A R R A N T Y

All UAB products fro m Mantracourt Electronics Ltd. ('Mantraco urt') are warranted a gainst defective materi al and workmanship for a period of (3)
three years from the date of dispatch.
If the 'Mantracourt' product you purchase appears to have a defect in material or workmanship or fails during normal use within the period,
please contact your Distributor, who will assist you in resolving the problem. If it is necessary to r eturn the product to 'Mantracourt' please
include a note stating name, company, address, phone number and a detailed description of the problem. Also, plea se indicate if it is a
warranty repair.
The sender is responsi ble for shipping charges, freight insurance and proper packaging to prevent breakage in transit.

'Mantracourt' warr anty does not apply to defects resulting from actio n of the buyer such as mishandling, improper interfacing, operation outside
of design limits, improper repair or unauthorised modification.
No other warranties are expressed or implied. 'Mantracour t' specifically disclaims any implied warranties of merchantability or fitness for a
specific purpose. The remedies outlined above are the buyer ’s only remedies. 'Mantracourt' will not be liable for direct, indirect, special,
incidental or conseq uential damages whether based on the contract, tort or other legal theory.

Any corrective maintenance required after the warranty period should be performed by 'Mantracourt' approved pers onnel only.

In the interests of continued product development, Mantracourt Electronics Limited reserves the right to alter product specifications
without prior notice.

Code No. 517-098 Issue 2.5 11.04.14