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9M02-8978-A002-EN
Version 14
Safe-E-
Stop™
User Guide
BYTE #
FIELD
TYPE
DESCRIPTION / VALUE
19
PSD1
– RSSI
SINT
(-128 to 127)
Received signal strength of last telegram received, in dBm
20-22
PSD2 Status bytes
1-2 & RSSI
(same structure as PSD1)
23-25
PSD3 Status bytes
1-2 & RSSI
(same structure as PSD1)
26-28
PSD4 Status bytes
1-2 & RSSI
(same structure as PSD1)
29-31
PSD5 Status bytes
1-2 & RSSI
(same structure as PSD1)
32
Reserved
Future use. Set to 0
33
MSD transactions counter
USINT (0-255)
Free running counter; increments each time a RF transaction is
initiated by the MSD.
34
PSD1 responses counter
USINT
Free running counters; each counter increment for each valid
response received from the corresponding PSD.
Valid responses are responses with right SystemAddress and no
CRC or framing error
With the current transaction structure, if no response losses, each
PSD response counter increments twice as fast as the MSD
transaction counter
35
PSD2 responses counter
USINT
36
PSD3 responses counter
USINT
37
PSD4 responses counter
USINT
38
PSD5 responses counter
USINT
39-64
Reserved
Future use. Set to 0
8.7 MSD Operation
The MSD is a critical part of your machine control system. For reliable operation, it is important that it is
operated within designed limits as directed and maintained in good order.
As long as the MSD remains powered on, the only interaction that may be required will be the result of
one or more PSDs going out of RF range, resulting in communication loss for longer than 30 seconds.
This condition requires the remaining (if any) users to confirm that the user of the offending PSD was not
subject to an accident. To enforce this check, all PSDs will automatically unlink and the MSD will require
its COMM LOSS RESET button to be pressed as a confirmation before any PSDs are able to re-link.
The Reset button is wired into one pair of the MSDs safety inputs; this enables the button to be placed at
a convenient location near the operators.
8.8 MSD Installation
8.8.1 Safety Instructions for Installation
Only trained and qualified persons may perform installation and maintenance work.
NOTE:
Ensure suitable and appropriate transient protection devices are fitted to relays contacts.
Ensure correct wiring of the machines’ main contactor and reset circuits. Use appropriate
gauge wiring and under no circumstances use wire of less than 24AWG and ferrules should be
used to protect against lose wire strands and proper insertion into the terminals. Thoroughly
test each hard-wired and
Safe-E-Stop MSD prior to handing over to production.
▪
Isolate the system from the electrical power in accordance with the applicable regulations.
▪
Observe user-specific regulations.
▪
Only use suitable tools.