5BChapter Two: Installation 55BProduct Location and Requirements
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Product Location and Requirements
The DMA unit meets the following criteria:
• POLLUTION DEGREE 2 in accordance with IEC 664
• Transient overvoltages according to INSTALLATION CATEGORY II
Operating Environmental Requirements
• Ambient Operating Temp
erature: 0° to 50° C (32° to 122° F)—DMA (Ambient)
15° to 40° C (59° to 104° F)—DMA (45° C)
15° to 50° C (59° to 122° F)—DMA (80° C)
• Ventilation requirements include sufficient air circulation
Safety Conditions
The DMA poses no safety
risk under the following environmental conditions:
• Altitude: up to 6500 ft (2000 m
)
• Maximum relative humidity: 80% for temperatures up to 31 °C,
decreasing linearly to 50% at 40° C
Power Requirements
The power for a DMA should be delivered through the DeviceNet network. Power supply
requireme
nts are shown in the following table.
Table 8: Power Supply Requirements
DMA (Ambient) DMA (45° C)
DMA (80° C)
Voltage
+11 to +25 VDC *
+11 to +25 VDC * +11 to +25 VDC *
Current at
Warm Up
200 mAmps (max) 700 mAmps (max) 1.0 Amps (max)
Isolation
500 [1] V
500 [1] V 500 [1] V
* Communicate within +11 to +25 VDC range.
Operation within performance specifications from +18 to +25 VDC.
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