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MM-TA-12B Muting Module
Instruction Manual
System Power Requirements
Supply Protection Circuitry
Response Time
Outputs
(see Warning on page 33)
MSSI Power Connections
Status Indicator LEDs
Diagnostic Code Display
Muting Lamp Output
Controls and Adjustments
Inputs
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2. Specifications
+24V dc ±15% @ 400 mA max (not including draw of the MSSI power, AUX, ML, M1-M4 and
OSSD connections); see Section 3.4 for total current draw calculation.
All inputs and outputs are protected from short circuit to +24V dc or dc common.
Muteable Safety Stop Interfaces (MSSI) and the Universal Safety Stop Interfaces (USSI) are
less than or equal to 10ms.
Two diverse-redundant solid-state safety outputs: 24V dc, 0.5A sourcing OSSD (output signal
switching device). Compatible with Banner "Safety Handshake" protocol (see Section 1.6).
ON-State voltage: ≥Vin-1.5V dc
OFF-State voltage: 1.2V dc max.
Non-safety auxiliary output: PNP solid-state output, rated at +24V dc @ 250 mA.
+24V dc ±15% @ 2.5A max. output (dependent on System power input). Resettable 2.5A fuse
3 Status Indicator LEDs (Red, Green and Yellow): indicate Power ON/OFF, operating mode,
lockout, override, and OSSD status
Green LEDs adjacent to individual inputs/interfaces indicate status (ON = active/closed)
Diagnostic Display is a two-digit numeric display that indicates the cause of lockout condi-
tions and the amount of time, in seconds, remaining for the backdoor timer.
A monitored or non-monitored (selectable) sinking output. If monitoring has been selected,
the current draw must be 10 mA to 360 mA. Interconnect wire resistance < 30 ohms.
Maximum Switching Voltage: 30V dc
Maximum Switching Current: 360 mA
Minimum Switching Current: 10 mA
Saturation Voltage: ≤ 1.5V dc @ 10 mA; ≤ 5V dc @ 360 mA
All configured on 2 redundant banks of DIP switches:
Manual/auto reset
One-way/two-way muting
Monitored/non-monitored mute lamp output
One-channel/two-channel/no EDM
Backdoor timer
Mute on power-up enable
Mute enable functional/disabled
The MSSI and the USSI can be interfaced with external safety devices that have either hard contact
outputs or Banner OSSD safety outputs with Safety Handshake protocol (see Section 3.5.5).
When using the MSSI or USSI sourcing outputs, the relay outputs or hard contacts must be capa-
ble of switching 15 to 30V dc at 10-50 mA.
Operating Range for MSSI and USSI Inputs
OFF State: 0-3V, 0-1 mA
ON State: 12-30V, 20-50 mA
Muteable Safety Stop Interface (MSSI)
This input consists of two channels (MSSI-A and MSSI-B), and can be muted when the require-
ments for a mute cycle have been met. When muted, the OSSDs remain ON, independent of the
MSSI status. If not muted, anytime either or both channels open, the OSSD outputs will go OFF.
(See Section 3.5.5 for further information.)
Universal Safety Stop Interface (USSI)
This input consists of two channels (USSI-A and USSI-B), and is always active. Any time either or
both channels open, the OSSD Outputs will go OFF. (See Section 3.5.5 for further information.)
Specifications
Max. load resistance: 1,000 ohms
Max. load capacitance: 0.1 µF
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