A range of plug-in option modules is available to add additional input, output and
communication functions to the instruments in the range. These modules can be either preinstalled at the time of manufacture, or retrofitted in the field.
The modules are installed between the instruments main circuit boards into the four option
slots. These are designated as Slots 1, 2, 3, A & B. Installation is detailed below.
Note:
Slot 1 modules cannot be fitted into Slot 2 or 3. Slot 2 & 3 modules cannot be fitted into
Slot 1. Some Slot 2 &3 modules should only be fitted into one of the two slots. This is
detailed in the - Option Module vs. Model Matrix below.
PSU BOARD
CPU BOARD
Figure 4. Typical rear view (uncased) & main board positions
Auto Detection of Option Modules
The instrument automatically detects which option modules have been fitted into each slot.
In Configuration Mode, the menus will change to reflect the options compatible with the
hardware fitted. The modules fitted can be viewed in the products information menu, as
detailed in the Product Information Mode section of this manual.
Page 14 Plug-in Options 59305, Issue 6 – March 2006
Before removing the instrument from it’s housing, ensure that all power has been
removed from the rear terminals.
1. Remove the instrument from its housing by gripping the side edges of the front panel
(there is a finger grip on each edge) and pull the instrument forwards. This will release the
instrument from the rear connectors in the housing and will give access to the PCBs.
2. Take note of the orientation of the instrument for subsequent replacement into the
housing. The positions of the main and option PCBs in the instrument are shown below.
Removing/Replacing Option Modules
With the instrument removed from its housing:
1. To remove or replace modules into Option Slots 1,A or B, it is necessary to gently
separate the CPU and PSU PCBs. This is achieved by detaching the main boards (PSU
and CPU) from the front moulding by lifting first the upper and then lower mounting struts
as shown. This frees the boards from the front. If only Option slots 2 or 3 are to be
changed, this stage is not required as these slots are accessible without separating the
main boards from the front.
Mounting Struts
Option Slot 1
Option Slot A
Option Slot 3
Option Slot 2
Figure 5. Location of Option Modules -
1
/16 DIN Instruments
CAUTION:
Take care not to put undue stress on the ribbon cable attaching the display and
CPU boards.
Page 16 Plug-in Options 59305, Issue 6 – March 2006
With the required option modules correctly located into their respective positions the
instrument can be replaced into its housing as follows:
1. If required, move the CPU and PSU boards back together, taking care to locate the option
module tongues into the slots in the board opposite. Hold the main boards together whilst
relocating them back into the mounting struts on the front panel.
2. Align the CPU and PSU PCBs with their guides and connectors in the housing.
3. Slowly and firmly, push the instrument in position.
CAUTION:
Ensure that the instrument is correctly orientated. A mechanical stop will operate if
an attempt is made to insert the instrument in the wrong orientation, this stop MUST
NOT be over-ridden.
59305, Issue 6 – March 2006 Plug-in Options Page 19
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