nVent SCHROFF 21596-077 User manual
Shelf Alarm Panel (SAP)
User’s Manual
Product Number:
21596-077
Revision: R1.0, February 05, 2008
Doc-No: 63972-230
Impressum:
Schroff GmbH
D-75334 Straubenhardt, Germany
The details in this manual have been carefully compiled and
checked - supported by certified Quality Management System
to EN ISO 9001/2000
The company cannot accept any liability for errors or misprints.
The company reserves the right to amendments of technical
specifications due to further development and improvement of
products.
Copyright © 2008
All rights and technical modifications reserved.
Rev. Date updated Change
R1.0 February 05, 2008 Initial Release
Schroff Shelf Alarm Panel (SAP)
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Table of Contents
1 Introduction....................................................................................................... 1
2 SAP Front Panel................................................................................................ 2
3 SAP Block Diagram .......................................................................................... 3
4 SAP SEEPROM ................................................................................................. 3
5 SAP Temperature Sensor ................................................................................ 3
6 SAP PCA9555.................................................................................................... 4
6.1 SAP I²C Addresses.............................................................................................. 4
6.2 User definable LEDs............................................................................................ 4
7 RS-232 Serial Console Interfaces on SAP...................................................... 5
7.1 SAP Console Cable for the Shelf Manger Serial Interface .................................. 5
8 Shelf Alarm Panel Backplane Connector ....................................................... 6
9 SAP Telco Alarms............................................................................................. 7
9.1 Telco Alarm Interface........................................................................................... 7
9.2 Telco Alarm LEDs................................................................................................ 7
9.3 Alarm Silence Push Button .................................................................................. 7
9.4 Alarm Reset ......................................................................................................... 8
9.4.1 Telco Alarm Connector (DB15-male)..................................................... 8
Schroff Shelf Alarm Panel (SAP) Introduction
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1 Introduction
Some I/O functionalities of the Schroff ACB-IV Shelf Manager have been moved
to a separate board called Shelf Alarm Panel (SAP). The Shelf Alarm Panel is a
FRU and provides:
• 3 Telco Alarm LEDs (MINOR, MAJOR, CRITICAL)
• 3 User definable LEDs
• The Telco Alarm connector (DB15-male)
• The Alarm Silence Push Button
• Serial console interfaces for Schroff Shelf Managers (RJ45 connectors)
• Temperature sensor (LM75)
• SEEPROM for FRU information
The SAP is connected to the Schroff ACB-IV Shelf Manager by a I²C connection,
the signals from the serial connectors are routed directly to serial console
interface on the Shelf Manager.
Figure 1: SAP
12708941
Schroff Shelf Alarm Panel (SAP) SAP Front Panel
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2 SAP Front Panel
Figure 2: Front Panel SAP
Figure 3: Connection between Shelf Manager and SAP
12708813
1 Fixing screw 7 LED USER 2
2 Serial Interface for Shelf Manager 1 8 LED USER 3
3 LED Minor Alarm (red) 9 Telco Alarm Connector
4 LED Major Alarm (red) 10 Alarm Silence button
5 LED Critical Alarm (amber) 11 Serial Interface for Shelf Manager 2
6LEDUSER1
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Schroff Shelf Alarm Panel (SAP) SAP Block Diagram
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3 SAP Block Diagram
Figure 4: SAP Block Diagram
4 SAP SEEPROM
The SAP SEEPROM is connected to the Master-Only I²C-bus and is a Microchip
24LC256 device.
5 SAP Temperature Sensor
The LM75 temperature sensor measuring the board temperature is located on
the SAP PCB. The temperature sensor is connected to the Master-Only I²C-bus.
12706921
I2C_PWR_A (ShMC1)
SAP Presence
LM75 Temp.
Sensor
SDA/SCL (I2C Bus CH0)
Backplane Connector
INV_ACTIVE_ACB1
INV_ACTIVE_ACB2
SEEPROM
RJ45 ESD
protection
3.3 V
I2C_PWR_B (ShMC1)
I2C_PWR_A (ShMC2)
I2C_PWR_B (ShMC2)
User 1
ALARM SILENCE
Critical Alarm
Major Alarm
Minor Alarm
Power Alarm
Minor Clear
Major Clear
Critical
Major
LED
Buffer
Minor
I2C-bus I/O port
PCA9555
TELCO Alarm Connector
ALARM LEDs
User 2
User 3
RJ45 ESD
protection
0x44
0x96 0xa6
Serial Console of
Shelf Manager 1
Serial Console of
Shelf Manager 2
Schroff Shelf Alarm Panel (SAP) SAP PCA9555
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6 SAP PCA9555
The PCA9555 device:
• controls the status of the LEDs
• reads the status of the Telco Alarm Cutoff push button (CLEAR)
• controls the Telco Alarm relays
Table 1: SAP PCA9555 Device Function
D
6.1 SAP I²C Addresses
Table 2: SAP I²C Addresses
6.2 User definable LEDs
The LEDs USER (1, 2, 3) are user definable and connected to the I²C-bus I/O
port of the PCA 9555 on the SAP.
PCA9555 I/O pins Function State
0.0 Power Alarm to telco relays output 1 = relays powered
0.1 Minor Alarm to telco relays output 1 = relays powered
0.2 Major Alarm to telco relays output 1 = relays powered
0.3 Critical Alarm to telco relays output 1 = relays powered
0.4 N/C Pulled High
0.5 LED_MIN (Minor alarm LED) output 1 = On
0.6 LED_MAJ (Major alarm LED) output 1 = On
0.7 LED_CRIT (Critical alarm LED) output 1 = On
1.0 Alarm cutoff push button input 0 = push button pushed
1.1 Minor Clear input 0 = voltage applied to input pins
1.2 Major Clear input 0 = voltage applied to input pins
1.3 N/C Pulled High
1.4 N/C Pulled High
1.5 LED_USER3 output 1 = On
1.6 LED_USER2 output 1 = On
1.7 LED_USER1 output 1 = On
LM75 SEEPROM PCA9555
0x96/0x4b 0xa6/0x53 0x44/0x22
Schroff Shelf Alarm Panel (SAP) RS-232 Serial Console Interfaces on SAP
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7 RS-232 Serial Console Interfaces on SAP
Figure 5: RS-232 Serial Console Interface on Shelf Alarm Display
The SAP provides two RS-232 serial console connector (SERIAL 1 and 2) for
Shelf Manager 1 and 2. The connectors are 8-pin RJ45 modular receptacles.
A full set of RS-232 signals, including modem control, is provided. The serial
interface is implemented on the Schroff Shelf Manager.
Table 3: RS-232 Serial Console Interface Pin assignment
7.1 SAP Console Cable for the Shelf Manger Serial Interface
Figure 6: RJ45 to DB9 Serial Console Cable
The connectors are shown with the cables pointing away.
12705811
Pin 1 Pin 8
The serial console default configuration is:
• 115200 baud
• no parity
• 8 data bits
•1stopbit
RJ45 Pin RS-232
Signal
ShMM-500
Signal Type Description
1 RTS RTS Out Request To Send
2 DTR DTR Out Data Terminal Ready
3 TxD TXD0 Out Transmit Data
4 GND GND --- Logic Ground
5 GND GND --- Logic Ground
6 RxD RXD0 In Receive Data
7 DSR DSR In Data Set Ready
8 CTS CTS In Clear To Send
12706929
RJ45-male DB9-female
1
2
3
4
5
6
7
8
RTS
DTR
TxD
GND
GND
RxD
DSR
CTS
8
6
2
5
5
3
4
7
CTS
DSR
RxD
GND
GND
TxD
DTR
RTS
51
9
6
18
Serial Console Cable sold separately,Schroff Catalog-No: 23204-187
Schroff Shelf Alarm Panel (SAP) Shelf Alarm Panel Backplane Connector
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8 Shelf Alarm Panel Backplane Connector
Figure 7: Shelf Alarm Panel Backplane Connector
Table 4: Shelf Alarm Panel Backplane Connector Pin Assignment
12706926
SAP ATCA Backplane Connector
Pin ADescription BDescription CDescription
1 -48V_A -48 V Feed A -48V_B -48 V Feed B
2VRTN_A Voltage return Feed
A
3VRTN_B Voltage return Feed
B
4
5 I2C_PWR_A 3.6 V from Shelf
Manager
I2C_PWR_B 3.6 V from Shelf
Manager
6 GND Ground GND Ground
7 SDA_CH0 Data I²C-bus
Channel 0
GND Ground
8 SCL_CH0 Clock I²C-bus
Channel 0
INT GND
9 RXD0_ACB1 Receive Data
Shelf Manager
10 DSR_ACB1 Data Set Ready
Shelf Manager
DTR_ACB1 Data Terminal Ready
Shelf Manager
11 CD_ACB1 Carrier Detect
Shelf Manager
12 CTS_ACB1 Clear To Send
Shelf Manager
RTS_ACB1 Request To Send
Shelf Manager
13 TXD0_ACB1 Transmit Data
Shelf Manager
14
15 SAP_PRES SAP Presence signal
to Shelf Manager
SCL_A
16 INV_ACTIVE_A
CB1
Active signal from
Shelf Manager
SHELF_GND Shelf Ground
Schroff Shelf Alarm Panel (SAP) SAP Telco Alarms
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9 SAP Telco Alarms
9.1 Telco Alarm Interface
The SAP provides a Telco Alarm interface on the DB15-male connector.
Three relay outputs are used for remote alarm distribution, reflecting the state of
the three Alarm LEDs. The relays are capable of carrying 72 VDC or 1 A with a
max. rating of 30 VA.
9.2 Telco Alarm LEDs
The Shelf Alarm Panel provides the Telco Alarm LEDs. These LEDs indicate
presence of Critical, Major and Minor alarms as follows:
Table 5: Telco Alarm LEDs
9.3 Alarm Silence Push Button
The Alarm Silence push button on the Shelf Alarm Panel faceplate deactivates
the alarm relays. During the time Alarm Silence is activated, the Alarm LEDs
flash. By pressing the Alarm Silence push button a second time, the alarm relays
are reactivated and the Alarm LEDs are solid.
State Description
Off No alarm active
On Alarm active
Flashing Alarm active, but silenced
The Alarm Silence push button only activates the Alarm Silence state, but
does not reset the alarms. If the silence interval (default 600 s) is exceeded
without resolving the alarms, the alarms will be re-initiated.
Schroff Shelf Alarm Panel (SAP) SAP Telco Alarms
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9.4 Alarm Reset
Hardware Reset:
Two relay inputs at the DB15 connector are used to reset the Minor and Major
alarm state.
The reset inputs accept timed pulse inputs for clearing Minor and Major alarm
states. Reset is accomplished by asserting a voltage differential from 3.3 VDC
to 72 VDC for between 200 ms and 300 ms. The acceptance voltage range is
from 0 to 48 VDC continuous (handles up to 60 VDC at a 50% duty cycle). The
current drawn by a reset input does not exceed 12 mA.
Software Reset:
The RMCP and CLI functions can be used to set and reset the Telco Alarms
(incl. Critical Alarm). See the Pigeon Point Shelf Manager External Interface
Reference for more information.
9.4.1 Telco Alarm Connector (DB15-male)
Figure 8: Telco Alarm Connector (DB15-male)
Table 6: Telco Alarm Connector Pin Assignment
There is no hardware reset (reset input) for the Critical Alarm state.
12705896
Pin Name Description
1 AMIR+ MinorReset+
2 AMIR- MinorReset-
3 AMAR+ MajorReset+
4 AMAR- MajorReset-
5 ACNO CriticalAlarm - NO
6 ACNC CriticalAlarm - NC
7 ACCOM CriticalAlarm - COM
8 AMINO MinorAlarm – NO
9 AMINC MinorAlarm – NC
10 AMINCOM MinorAlarm – COM
11 AMANO MajorAlarm – NO
12 AMANC MajorAlarm – NC
13 AMACOM MajorAlarm – COM
14 APRCO PwrAlarm – NO
15 APRCOM PwrAlarm - COM
Shield Shelf-GND Shelf Ground
SCHROFF GMBH www.schroff.biz
Langenalberstr. 96-100 Tel.: + 49 (0) 7082 794-0 Fax: +49 (0) 7082 794-200
D-75334 Straubenhardt
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