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System Installation
9) Generate a stop command from the safeguarding device connected to the
MSSI (e.g., interrupt the defined area of a safety light screen). Verify that
MSSI Channel A and B indicators go OFF, but the Green status indicator
remains ON.
NOTE: If the 30- or 60-second Backdoor Timer feature has been selected, the
Diagnostic Display will begin to count down; otherwise a flashing dash will
appear on the display.
10) Clear the Stop command (before the Backdoor Timer expires) and verify that
the MSSI Channel A and B indicators come ON. Clear (deactivate) the mute
devices before the Backdoor Timer expires and verify the Mute indicator goes
OFF. The Green status indicator should remain ON.
11) Verify that it is not possible for a single individual to initiate a mute condition
by triggering the mute devices (for example, by blocking both photoelectric
beams or actuating both switches) and being able to pass through the safe-
guard without being detected and without issuing a stop command to the
machine. Do not expose any individual to hazard while attempting to mute the
system.
12) Verify that it is not possible for personnel to pass in front of, behind, or next
to the muted object without being detected and without issuing a stop com-
mand to the machine.
13) If one-way (directional) muting has been selected, verify that the system can
not be muted by blocking (or activating) M3-M4 before M1-M2. Do not
expose any individual to hazard while attempting to mute the system.
If all checks have been verified, proceed to Section 3.7. If any of these checks
fail, do not attempt to use the system until the reason for the failure(s) is
identified and corrected.
3.7 OSSD and EDM Connections and Electrical Interface to the
Guarded Machine (Permanent Hookup)
Supply power, the external reset switch, and other inputs (as required by each
application) should be previously connected by this point. The final connections
to be made are:
• Mute enable,
• EDM hookup,
• OSSD outputs,
• FSD interfacing, and
• MPCE connections.
3.7.1 Mute Enable Hookup
The Machine Interface connector provides connection for the Mute Enable input
(ME) (see Section 1.12). Mute Enable gives the user the ability to "frame" or cre-
ate a "window of opportunity" when a mute can occur. When configured, the
Mute Enable input is a contact that must be closed before the safeguard can be
muted. After the safeguard is muted, opening of the Mute Enable input has no
effect, but it must be re-closed before the safeguard can be muted again.
If Mute Enable is not to be used, leave the connection open and configure DIP
switch SW6 to "ON" (see Figure 3-2).
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: CustomerService@valin.com
MM-TA-12B Muting Module
Instruction Manual
WARNING . . .
Shock Hazard
Always disconnect
power from the Safety System and
the guarded machine before mak-
ing any connections or replacing
any component. Use extreme cau-
tion to avoid electrical shock at all
times. Serious bodily injury or
death could result.
WARNING . . .
Proper Wiring
The generalized wiring
configuration shown in Figures
3-17, 3-18, and 3-19 are provided
only to illustrate the importance of
proper installation. The proper
wiring of the Safety system to any
particular machine is the sole
responsibility of the installer and
end user.
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