Eaton SM65, Руководство пользователя

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SM65 Supervisory Module Handbook
20
Copyright © 2004-2009 Eaton Corporation. All Rights Reserved.
IPN 997-00012-35E December 2009
Installing External Alarm and User Digital Inputs Cabling
About alarm relays and user digital inputs
Alarm Relays
Alarms may be mapped to a relay which, when energized or de-energized, activates an
external device. Six user-configurable relays (RLY1 to RLY6) are available on the SM65
supervisory module. RLY6 is used for MONITOR OK but other alarms can be mapped to this
relay if required.
‡
To receive application notes refer to Worldwide Support on page 65 .
The alarm relays specifications are:
•
Contact Arrangement : One changeover contact per relay
•
Maximum Switching Voltage
: 60V DC or 30V AC
•
Maximum Switching Current
: 500mA
•
Maximum Continuous Current : 500mA
•
Maximum Power Rating
: 30W (DC Voltage) or 15 VA (AC Voltage)
•
Maximum Wire Size
: 1.5mm²
•
Isolation : Relay connections are isolated to 500 V DC from all
other circuitry, ground (earth) and system common.
User Digital Inputs
The SM65 supervisory module can monitor up to six user digital inputs. Switching devices
(such as relays, switches, or opto-isolators) can be connected to the SM65 using the screw
terminals labeled DI1 to DI6.
The user digital inputs are specified as follows:
•
Input Impedance
: 47 k Ω
pull-up resistor to +5 V.
(Referenced to Monitor 0V = system LIVE bus)
•
Maximum Wire Size
: 1.5 mm²
All wiring to the user digital inputs must be isolated from earth (ground). The SM65
supervisory module will not operate correctly if any user digital inputs are earthed
(grounded).