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7.0 Installation, continued
71
704-939-B10-001 Rev. A5 (06/2019)
7.6 I/O Connections (TPR, ENV)
The Alpha DM3X Transponders are all populated with a Tamper interface to report the status of the power supply
enclosure door when equipped with the optional tamper switch. The Alpha DM3X Transponders are populated with
the Environmental and I/O Controller interface (referred to in this section as I/O Port) which can be used to monitor
and control an array of contact relay devices such as battery heater mats, enclosure moisture sensors and emergency
generators.
Fig. 7-7, I/O (ENV) and Tamper Switch Interface (TPR) Connection Locations
7.6.1 Tamper (TPR) Switch Interface
The tamper switch interface is designed to report and alarm the status of the power supply enclosure door. The circuit
created by the tamper switch is a contact relay, so other contact relay devices can be designed to be monitored through
this interface. For example, the Alpha Utility Line Sensor (Alpha P/N 746-399-2X) uses the tamper interface to monitor the
Utility outlet to report the presence of line voltage.
Table 7-1, Tamper (TPR) Switch Specifications
Tamper (TPR) Switch Specifications
Function
Parameter
OID
Values
Description
Tamper
psTamper
1.3.6.1.4.1.5591.1.4.2.1.27.X
See Note 1
1 = Closed
2 = Open
Status of Enclosure
Door
Utility Sense
psTamper
1.3.6.1.4.1.5591.1.4.2.1.27.X
1 = No Voltage
2 = Voltage Present
Status of Utility
Voltage
tamperPolarity 1.3.6.1.4.1.926.1.3.2.6.1.0
1 = Report “Open”
When Contact Open
2 = Report “Open”
When Contact Closed
Controls Polarity of
“psTamper” Reporting
Alarm / Trap
psTamper
(Closed)
1.3.6.1.4.1.5591.1.1.3.1.3.13.1.3.6.1.4
.1.5591.1.4.2.1.27.X.1
1 = Disable
2 = enableMajor
3 = enableMinor
Alarm Enable for
psTamper = Closed
Alarm / Trap
psTamper
(Open)
1.3.6.1.4.1.5591.1.1.3.1.3.13.1.3.6.1.4
.1.5591.1.4.2.1.27.X.2
1 = Disable
2 = enableMajor
3 = enableMinor
Alarm Enable for
psTamper = “Open”
In the OID column of the following table, ‘X’ denotes power supply device address (Default = 1)
NOTICE
:
I/O Control Interface (ENV)
Tamper Switch Interface (TPR)
TPR
ALM/
RDY
ENV
RST