AMALGAMATED INSTRUMENT RM6-IV Guide

RM6-IV
DIN Rail Mount
DC Current/DC Voltage
Process Monitor
Operation and Instruction Manual

Introduction
Thismanualcontainsinformationontheinstallationandoperationof
theRM6-IVmonitor.TheRM6-IVacceptsinputsintheranges0to20mA, 4
to20mA, 0 to100mV,0to1Volt,0 to 10 Volts, 0 to100Voltsoruserset
input (called the USER range) limits anywhere within the above ranges.
Selection of input range is via the INPt function. The SCLE function is
used to scale any of the standard input ranges whilst the USER input is
scaled using the CAL1 and CAL2 “live” input functions.
The displayed output may be scaled to read in any engineering
units. A square root extractor is included and can be configured as
required.Twoalarm/control relaysareprovided,one ofwhich(relay2) may
be configured via a DIP switch to operate as a hardware failure alarm. The
4-20mA recorder output included is easily setup to retransmit between
scaled input values.
Unless otherwise specified at the time of order your RM6-IV has
been factory set to a standard configuration. This configuration can be
easily changed by the user. All changes to configuration are made via the
four push buttons ( P,F,^and v) located at the front of the unit.
The RM6 series instruments are designed for high reliability in
industrial applications. The LED display can be set for desired brightness
level to suit most locations and light levels.

Mechanical Installation
The dimensions of the RM6-IV are shown in the diagrams below.
The RM6 is designed for DIN rail, horizontal mounting. The instrument
snapsonto35mmDIN standardrails(EN50022).ToinstalltheRM6simply
clip onto the rail shown below. To remove lever the lowerarm downwards
as illustrated below. DIMENSIONS
REMOVING FROM
THE DIN RAIL
CLIPPING THE INSTRUMENT
ONTO THE DIN RAIL

Electrical Installation
The diagrams below show the electrical connection points for the
RM6-IV. As the instrument is designed for continuous use no power switch
is fitted. It is recommended that an external switch and fuse be provided to
allow the unit to be removed for servicing.
The terminal blocks are of the plug in type for ease of connection.
Wires of up to 1.5mm diameter (2.5mm dia. for power supply and relay
terminals) may be fitted. Connect the wires to the appropriate terminals as
indicated in the diagrams below. Ensure that all connections are correct
before switching on. When power is applied the instrument will cycle
throughadisplaysequence,seethe“SwitchingOnTheInstrument”section
for full details of display messages. At the end of the switch on display
sequencea“livereading”will be shown on thedisplayifaninputis present.
A test input or a known sensor input may be used at this stage to check the
operation of the instrument.

Examples of sensor connection.

DIP Switch & Link Settings
TheRM6hastwoDIPswitchesandasetofinputlinkslocatedonthe
main board. To dismantle the instrument and gain access to the switches
and links firstly remove the earth screw which passes through the side
panel of the aluminium case then remove the four screws which secure the
front display panel to the case and pull the display out of the case.
DIP Switch 1 - When set to the OFF position the instrument behaves
normally.Whensettothe ON position the instrument will block access
to any functions thus providing security for the existing setup. If an
attemptismadetoenterCALorfunctionsetupmodeswiththeswitchin
the ON position the message NO ACCS will flash indicating that the
access is blocked.
DIP Switch 2 - When set to the OFF position the instrument behaves
normally and there is access to alarm 1 and 2 functions. When set to
ON alarm 2 becomes a dedicated hardware failure alarm. Alarm 2 will
operate in the normally closed (energised) mode and will open
(de energise) if the entire instrument, its analog to digital converter or
its micro controller fails. In the ON position there will be no access to
alarm 2 functions since this alarm is now dedicated.
Input Links - Input links on the main board are used to select the
required input range, ensure that the link setting corresponds to the
software setting (see INPt function). To change a link setting simply
pullthetabconnectedtothelinktoremoveitfromtheunwantedsetting
and place the link or links in the required position. Note the 4-20mA /
0-20mA and 0-0.1V inputs each require two links.
Main Board

Switching On The Instrument
When the instrument has been electrically connected you can view
the status of the input range and measurement mode settings by applying
power and watching the display sequence. If you connect a sensor or test
voltage/current you will also see the reading obtained from the sensor or
test input. Upon applying power the display automatically scrolls through
five displays. The first lights up all LED digits i.e. displays eights. By
watching this display you can confirm that all display segments are
functioning. The second display is a factory identification message. The
third display gives the software revision number of the instrument. The
fourthdisplayshowstheinputrangeselected,seethe“FunctionsAvailable”
and “Setting Up The RM6-IV” chapters if this is not the range you require.
The fifth display shows the measuring mode being used, again see the
“FunctionsAvailable”and“SettingUpTheRM6-IV”sectionsfordetails.The
sixthdisplayshows the sensor/testinput reading,ifany input isconnected.
The switch on display sequence is illustrated in the diagram below.

Functions Available
Note: Some of the functions described in this chapter are available
only when the instrument is powered up in CAL mode. See “Setting Up the
RM6-IV”,page10,fordetailsofthismode.Someofthesefunctionsareonly
seen when USER input mode and some when in the standard voltage or
currentselectioninputmode.See the function tables and detailsin“Setting
Up the RM6-IV”.
Two measuring modes are available. These are:
Standard mode - This mode is indicated by Stnd on the display.
Use this mode for linear measurement applications.
Squarerootmode-ThismodeisindicatedbySqRt onthedisplay.
Use this mode when the square root facility is required in the measurement
being made.
These modes are chosen under the “Select” (SLCt) function. The
mode chosen determines how the sensor inputs (input (I NPt) function)
will be interpreted by the instrument. See “Setting Up The RM6-IV” chapter
for full details and set up procedure for each mode and function.
Brief Description of Functions:
Alarm/Control relay functions - Two Alarm/Control relays are
provided, each one can be adjusted to change the low setpoint (A1Lo and
A2Lo), the high setpoint (A1Hi and A2Hi), the hysteresis or deadband
(A1HY and A2HY), the trip time (A1tt and A2tt) additionally each can
be set to operate as normally open (A1n.o and A2n.o) or normally closed
(A1n.c and A2n.c). (Note: DIP Switch 2 is used to select alarm 2
operation, refer to page 5).
Retransmission output - The recorder output or analog
retransmissionoutputisset at4-20mA. ThefunctionsREC_ andREC~ set
the display values at which 4 and 20mA are transmitted respectively.
Digital filter (FLtr) - allows the user to alter the input filter level
from 0 to 8, this is a weighted averaging type of filter and is used when the
instrument is functioning with inputs carrying electrical “noise”. The highest
setting will give the highest filter level (i.e. it will filter out higher levels of
noise) but it will also give the slowest display response time. Thus a setting
of 8 will give a higher filter level than a setting of 5, but the setting of 5 will
give a faster display response. Choose a level which is just high enough to
filter out the noise present to ensure optimum response time. A setting of 3
is standard.
Display brightness (brgt) - allows the setting of the display
brightness level from 0 to 15, where 15 is the highest brightness level.
Decimalpoint(dCpt)-allowstheusertoalter theplacementof the
decimal point. Displays such as 294.3,29.43 etc. may be set.

Setpoint access enable (SPAC) - Can be set to on or OFF, when
set to OFF the alarm setpoint functions will only be accessible when
powering up the instrument in CAL mode. When set to on the alarm
setpointfunctionsselectedinA!SA andA@SA willbeaccessiblebynormal
function setup mode entry. See “Setting Up the RM6-IV” chapter for details
of calibration and function setup modes.
Alarm 1 setpoint access select (A!SA) - When SPAC is set to on
these two functions allow for one or both setpoints for the alarm to be
accessed via function setup mode entry only (i.e. there is no need to enter
CAL mode). Selections are A1Lo (low setpoint accessible), A1Hi (high
setpoint accessible) and A!bt (both setpoints accessible).
Alarm 2 setpoint access select (A@SA) - As above but choices are
for alarm 2 e.g. A@bt.
Input selection (INPt) - Allows the selection of the input ranges to
be used. The input ranges available are: 0 - 20mA (0-20), 4 - 20mA
(4-20), 0 - 1 Volt (0-1), 0 - 10 Volts (0-10), 0 - 100 Volts (0=00) and
user(USER).TheUSER function allows theinputlimitstobe set anywhere
within the limits of the other ranges e.g. 3 - 16mA. The use of the USER
mode is described in the “Setting Up The User Function”, page 21. Ensure
that the link settings on the main circuit board correspond to the input
selectionmadeinthisfunction,see“DIPSwitch&LinkSettings”,page5.
Calibrationpoints(CAL1&CAL2) -(seenonlyinUSER mode)The
calibration function is seen only in USER mode where input low and high
(0% and 100%) levels are variable. Entering the calibration points allows
the instrument to store the actual input signal levels at the input limits.
Scale (SCLE) - (not seen in USER mode) The scale function is
used as a separate function in non USER mode and used with CAL1 &
CAL2 if in USER mode. Within the scale function the display values for the
input limits are entered.
Offset (OFSt) - (seen only in USER mode) The offset function
allows the entry of a single value by which the calibration curve is to be
adjusted before being displayed.
Uncalibrate (UCAL) - The uncalibrate function allows the user to
reset the functions back to the factory settings. See the “Factory
Configuration” section for a table of factory settings and a record of user
changes made to these settings.
Select (SLCt) - from within this function one of the two measuring
modes (Standard or Square Root) is selected.

7 Function Tables
Initial display Next display Default setting Record your settings
A1Lo Value in memory OFF
A1Hi Value in memory OFF
A2Lo Value in memory OFF
A2Hi Value in memory OFF
A1HY Value in memory 1
A2HY Value in memory 1
A1tt Value in memory 0
A2tt Value in memory 0
A1n.o/A1n.c A1n.o or A1n.c A1n.o
a2n.o/A2n.c A2n.o or A2n.c A2n.c
REC_ Value in memory 0
REC~ Value in memory 1000
FLtr 0 to 8 3
brGt 0 to 15 15
dCPt 0, 0.1, 0.02 or
0.003 0
SPAC on orOFF on
A1SA A1Lo, A1Hi or
A!bt A!bt
A2SA A2Lo, A2Hi or
A@bt A@bt
INPt
0-20, 4-20,
0-0.1, 0-1
0-10, 0-100
or USER
4-20
*CAL1 SCL1
value 0.0
*CAL2 SCL2
value 100.0
SCLE
En0 or4
followed by
En20, 0.1,1,
10 or100
0.0
and
100.0
*OFSt Scale
Value
UCAL CAL
CLR
SLCt Stnd
SQRt Stnd
Notes: * Means function is only available in USER mode.
Shaded functions are available only through power up CAL mode entry.