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Figure 2-18
Cable connection of the relay node
i
= 1 - 6
RE
i +
CTR_OUT-
RE
i -
The relay node has two pins. The settings of the two pins are as follows:
l
If relay node output is enabled, the two pins are connected.
l
If relay node output is disabled, the two pins are disconnected.
If the relay needs to output 60 V DC or higher, use a 24 V intermediate relay to convert the
output voltage.
2.6 Technical Specifications of the EMU
This describes the technical specifications of the EMU.
Technical Specifications of the EMU
lists the technical specifications of the EMU.
Table 2-13
Technical specifications of the EMU
Item
Measured Object
Specification
System voltage
Measurement range
0 V DC to 100 V DC
Measurement precision
±1 V
Temperature
Measurement range
-20
o
C [-4
o
F] to 80
o
C [176
o
F]
Measurement precision
±2
o
C
Humidity
Measurement range
0% RH to 100% RH
Measurement precision
±5%
Boolean signal
Measurement range
Smoke, door status, water damage, and
infrared signal
Alarm response time
< 10s
EMU
User Guide
2 Overview of the EMU
Issue 13 (2009-12-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2-19