User's Manual
Table Of Contents
- 1. GENERAL
- 2. INTRODUCTION
- 3. CONNECTION SETUP
- 4. INSTALLATION
- 5. FUNCTIONAL DESCRIPTION
- 5.1. DIGITAL ARCHITECTURE
- 5.2. FEATURES
- 5.2.1. Filters Node M
- 5.2.2. Filters Node C
- 5.2.3. Digital ICE (Digital Interference Cancellation Equipment)
- 5.2.4. VSWR (Voltage Standing Wave Ratio)
- 5.2.5. RSSI (Receive Signal Strength Indication)
- 5.2.6. Alarm Forwarding
- 5.2.7. Downlink Final Amplifier
- 5.2.8. Power Supply Unit
- 5.2.9. Modems
- 5.2.10. Digital Channel Module (DCM)
- 5.2.11. External Alarm Controller - EAC-Board
- 5.2.12. Battery Pack - Battery On/Off
- 5.2.13. UL and DL Duplexer
- 6. MAINTENANCE AND REPLACEMENT
- 7. ILLUSTRATIONS
- 8. INDEX
User’s Manual for Node M and Node C
Network Elements
Page 54 M0121A4A.doc
5.2.11.4. Summary Alarm
The summary alarm is a DC potential-free contact relay.
Observe that the cross-sectional area of the wires to be connected must be in the
range from 0.14 - 1.5 mm
2
.
Pin No: 1 2 3
figure 5-23 Summary alarm relay
The following table indicates the three-connector pin out.
Pin No Contact Maximum Resistive Load
1 Open in alarm condition Max 1 A @ 50 Vdc
2 Common Max 2 A @ 30 Vdc
3 Closed in alarm condition Max 1 A @ 230 Vac
table 5-1 Pin assignment of relay contacts
Pin 3 Pin 2 Pin 1
B0185AHA
figure 5-24 Relay contacts, alarm condition