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Introduction
Individual features discussed in the following sections are:
- Operating Status LEDs and Diagnostic Display
- Auto/manual reset
- Lockout conditions
- Control reliability
- Mutable Safety Stop Interface (MSSI)
- Universal Safety Stop Interface (USSI)
- Output Signal Switching Device (OSSD) outputs
- Auxiliary (AUX) output
- External device monitoring (EDM)
- Mute devices and mute inputs (M1- M4)
- Mute enable input (ME)
- Mute lamp output (ML)
- Backdoor timer
- Mute on power-up
- Override
- One-way/two-way muting
1.2 Operating Status LEDs and Diagnostic Display
The Module has three Operating Status LEDs (one each
red, yellow and green), plus a 2-digit Diagnostic Display,
visible through a window in the front panel. The individual
LEDs provide constant, ongoing system status information
at a glance. The Diagnostic Display provides error codes
that correspond to the cause of a fault or configuration
error which results in a lockout, and other more detailed
conditions. See Sections 4 and 5 for further information.
1.3 Automatic or Monitored Manual Reset Select
The selectable Automatic or Monitored Manual Reset pro-
vides flexibility for the user that has applications in which
the operator is continually sensed, or in applications where
the operator can pass through and become clear of the
sensing field. See Section 3.1.4, "Pass-through hazards."
The configuration is selected via two banks of DIP switch-
es located inside the Module's configuration port (see
Figures 1-2 and 3-2).
Monitored Manual Reset
Manual Reset is typically used in situations where the indi-
vidual can pass through a sensing field and become clear
of a safeguarding device, such that the device can no
longer prevent hazardous motion (e.g., perimeter guard-
ing). The Module "monitors" the input for two transitions:
from open-to-closed, and from closed-to-open within a
certain time period. This prevents the reset button from
being tied down or failing in a closed condition, and caus-
ing an unintended or automatic reset.
Upon power-up, when the Module has been configured for
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MSSI Interface
(7-pin Mini-style
connector, to
Primary
Safeguard)
Mute
Device
inputs
Machine
Interface
(8-pin Mini-style
connector to
machine)
Earth Ground
Screw
NOTE: Green indicators are provided for each input to
verify an active state. A single indicator is provid-
ed for the Reset Input and for each of the Mute
Device inputs (M1 - M4). A green indicator is
provided for each channel for the MSSI, USSI,
and OVERRIDE inputs.
Figure 1-2. Muting Module features
MM-TA-12B Muting Module
Instruction Manual
Mute
Lamp/AUX
User-writeable
snap-in label
USSI Input
Override Input
Reset Input
Status
Indicators
Configuration Port
• DIP Switch Banks A and B
• Diagnostic Display
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