Metermatic EM6 User manual

EM6
Installation Manual

EM6
Installation Manual
Rev 3 Page 2
S. Robinson September 2017
Table of Contents
1. Introduction..........................................................................................................................4
2. Pre installation precautions..................................................................................................5
2.1. General ..........................................................................................................................5
3. Installation............................................................................................................................6
3.1. Mechanical installation..................................................................................................6
3.1.1. EM6........................................................................................................................6
3.2. Electrical installation.....................................................................................................7
3.2.1. EM6 Installation Block diagram............................................................................7
3.2.2. J1 –Input power.....................................................................................................9
3.2.2.1. APM-100............................................................................................................9
3.2.2.2. DPM-100..........................................................................................................10
3.2.3. J2 –Relay outputs................................................................................................11
3.2.4. J3 –Pulse outputs.................................................................................................12
3.2.5. J4 –Communication interfaces............................................................................13
3.2.5.1. RS232 or RS485 setup .....................................................................................13
3.2.5.2. RS485 Terminating resistor setup....................................................................14
3.2.6. J5 –Inputs............................................................................................................15
3.2.7. J6 and J7 –EXD pulsars......................................................................................16
3.2.8. J8 –CAN BUS.....................................................................................................17
3.2.8.1. 1.6W output selection (JP9 bottom).................................................................17
3.2.8.2. 1.2W output selection (JP9 top).......................................................................18
3.2.8.3. Passive input (JP9 not terminated)...................................................................19
3.2.9. J9 –Proxy sensor interface ..................................................................................20
3.2.10. J10 and J11 –Temperature interface................................................................21
3.2.11. J12 and J13 –IS Pulsars...................................................................................22
3.2.11.1. Normal selection (Active).............................................................................22
3.2.11.2. Normal selection (open collector) ................................................................23
3.2.11.3. Namur selection............................................................................................24
4. Dimensional drawing.........................................................................................................25
5. Instructions.........................................................................................................................27
5.1. Flameproof (EXD) ......................................................................................................27
5.2. Intrinsic safety.............................................................................................................29
6. Special conditions of use....................................................................................................31
7. Labels.................................................................................................................................32
7.1. EM6.............................................................................................................................32
7.2. EM6-X.........................................................................................................................32
7.3. FLP-101.......................................................................................................................33
7.4. EM6 fuseplate..............................................................................................................34
8. Safety parameters...............................................................................................................35
8.1. EM6 and EM6-X.........................................................................................................35
8.1.1. J1 Input power –APM-100..................................................................................35
8.1.2. J1 Input power–DPM-100...................................................................................35
8.1.3. J8 CAN BUS –1.6W (see section 3.2.8.1)..........................................................35
8.1.4. J8 CAN BUS –1.2W (see section 3.2.8.2)..........................................................35
8.1.5. J8 CAN BUS –Passive (see section 3.2.8.3).......................................................35
8.1.6. J9 Proxy interface.................................................................................................35
8.1.7. J10 and J11 Temperature interface ......................................................................36
8.1.8. J12 & J13 Pulsar interface (see section 3.2.11.1) ................................................36

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8.1.9. J12 & J13 Pulsar interface (see section 3.2.11.2) ................................................36
8.1.10. J12 & J13 Pulsar interface (see section 3.2.11.3).............................................36
8.1.11. J14 Dallas iButton interface.............................................................................36
8.1.12. GSM–100 .........................................................................................................37

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Installation Manual
Rev 3 Page 4
S. Robinson September 2017
1. Introduction
The EM6 System, designed and manufactured by Metermatic (Pty.) Ltd. South Africa,
is intended to control and meter liquid product transports for custody transfer. The
EM6 is mounted on bulk petroleum vehicles or gantries and is designed to
electronically measure and control all loading/offloading processes.
The EM6 is housed in a combined Exd and Intrinsic safe enclosure, which has
approximate dimensions of 347mm x 226mm x 91mm. Four M10 bolts secures the
EM6 onto the vehicle or gantry installation. The EM6 enclosure has seven M20x1.5
gland entries, the first three providing cable entries to the Intrinsic Safe side and four
providing cable entries to the Exd side. There is also an M16x1.5 gland entry at the top
providing an entry for the M16 Exd Antenna Bush assembly, when GSM connectivity
is required (DPM-100 powered).

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2. Pre installation precautions
2.1. General
a) Installation and maintenance shall be carried out in accordance with the
applicable code of practice and by suitably trained personnel.
b) The enclosure shall be installed so that they are not subjected to direct
spray from the vehicles wheels.
c) The equipment is only certified for use in ambient temperatures in the
range -20°C to +60°C and should not be used outside this range.
d) If welding is to be done on a vehicle or structure after the EM6 has been
installed, then all connections to the EM6 must be isolated.
e) No additional holes may be drilled into any enclosure as this will
invalidate the certification of the system.
f) No additional components may be installed in any enclosure as this will
invalidate the certification of the system.
g) The equipment may be used with gases and vapors associated with Group
IIA in category 2 and 3 locations. The intrinsic safety outputs may be
connected to suitable equipment is category 1 locations
h) Repair of this equipment shall be carried out in accordance with the
applicable code of practice.
i) The certificate number has an ‘X’ suffix which indicates that special
conditions of installation and use apply. Those installing or inspecting
this equipment must have access to the contents of the certificate.
j) If the equipment is likely to come into contact with aggressive substances,
then it is the responsibility of the user to take suitable precautions that
prevent it from being adversely affected, thus ensuring that the type of
protection is not compromised.
Aggressive substances - e.g. acidic liquids or gases that may
attack metals, or solvents that may
affect polymeric materials.
Suitable precautions - e.g. regular checks as part of routine
inspections or establishing from the
material’s data sheet that it is resistant
to specific chemicals.
k) There are no special checking or maintenance conditions other than a
periodic check
Failure to adhere to the operating conditions and considerations described
below could result in the equipment malfunctioning.

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Installation Manual
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3. Installation
3.1. Mechanical installation
3.1.1. EM6
a) The installed location height of the unit should permit easy viewing of the
display, and provide convenient access to the keypad and the M16 Exd
Antenna Bush assembly located on the top of the enclosure.
b) Access for servicing the unit is through the front cover. Complete access
by service personnel for repair and removal of parts should be provided.
For ease of service the cover must swing open more than 100°. The
enclosure is hinged on the left.
c) Cable entry to the unit is through the bottom. There are seven M20 gland
entries provided.
d) The M16 entry at the top (external) must be fitted with either the Exd
Antenna Bush assembly or a suitable Exd blanking plug if no Exd
Antenna Bush is fitted.
e) Only certified Ex d IIA (at least) glands and/or blanking elements must be
utilized in the flameproof entries.
f) The EM6 enclosure must be earthed to the vehicle’s chassis or structure
by means of either the connecting bolts or bonding point provided.
g) The flameproof cover is secured with sixteen M6 x 1.0 x 25mm –grade
12.9 SHCH (socket head cap screws). Washers are fitted to the fasteners
up to a maximum of 3.1mm thick
h) The EM6 System is group IIA equipment and may connect to group IIA
equipment. It may be used with flammable gases and vapors with
apparatus group IIA and with the temperature classes T1, T2, T3 and T4.

3.2. Electrical installation
3.2.1. EM6 Installation Block diagram

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Failure to follow the instructions flagged with the icon shown on the left
will invalidate the Intrinsically Safe (IS) approvals of the equipment. This
could result in dangerous conditions.

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Installation Manual
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3.2.2. J1 –Input power
3.2.2.1. APM-100
Identified with “APM-100” marking on the silkscreen of the PCB
250VAC Input Only
Minimum 0.5mm² wire required
It is important not exceed the SAFETY PARAMETS of J1 (see section 7.1 below).
Failure to do this will invalidate the IS certification.

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Installation Manual
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3.2.2.2. DPM-100
Identified with “DPM-100” marking on the silkscreen of the PCB
24VDC Input Only
Minimum 0.5mm² wire required
It is important not exceed the SAFETY PARAMETS of J1 (see section 7.1X below).
Failure to do this will invalidate the IS certification.

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Installation Manual
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3.2.3. J2 –Relay outputs
The relays are internally limited with a 5A fuse –F8
Minimum 0.5mm² wire required

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3.2.4. J3 –Pulse outputs
The Pulse Outputs can be set to be an open collector or internal
pull up (10K) configuration with JP1 and JP2 respectively.
Minimum 0.5mm² wire required

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Installation Manual
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3.2.5. J4 –Communication Interfaces
3.2.5.1. RS232 or RS485 setup
Dedicated RS232 output (Pins 1, 2 and 5)
Selectable RS485 or RS232 output (Pins 3,4 and 5) via JP3-JP6
Minimum 0.5mm² wire required

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Installation Manual
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3.2.5.2. RS485 Terminating resistor setup
1K terminating resistor selection available via JP7 and JP8

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3.2.6. J5 –Inputs
Minimum 0.5mm² wire required

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3.2.7. J6 and J7 –EXD pulsars
Minimum 0.5mm² wire required

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3.2.8. J8 –CAN BUS
3.2.8.1. 1.6W output selection (JP9 bottom)
JP10 to be terminated at start and end of bus individually
Minimum 0.34mm² wire required
It is important to be aware of the SAFETY PARAMETS of J8 (see section 7.1 below)
with this configuration. Not taking this into account during installation can invalidate
the IS certification.

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Installation Manual
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3.2.8.2. 1.2W output selection (JP9 top)
JP10 to be terminated at start and end of bus individually
Minimum 0.34mm² wire required
It is important to be aware of the SAFETY PARAMETS of J8 (see section 7.1 below)
with this configuration. Not taking this into account during installation can invalidate
the IS certification.

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Installation Manual
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3.2.8.3. Passive input (JP9 not terminated)
JP10 to be terminated at start and end of bus individually
Minimum 0.34mm² wire required
It is important to be aware of the SAFETY PARAMETS of J8 (see section 7.1 below)
with this configuration. Not taking this into account during installation can invalidate
the IS certification.

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Installation Manual
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3.2.9. J9 –Proxy sensor interface
Minimum 0.34mm² wire required
It is important not exceed the SAFETY PARAMETS of J9 (see section 7.1 below).
Failure to do this will invalidate the IS certification.