SA-ACU-SR User
Manual
S-Access GmbH
Tel: +41 44 700 31 11
Oberhausenstrasse 47
Page
15
of
16
Fax: +41 44 700 31 03
8907 Wettswil a/A
Email:
Switzerland WEB:
www.s-access.ch
5.1.3 Alarm relay interface
Connector type
SubD15, male
Max. Switching power
30 W
Max. Switching current
1
А
Max. Switching voltage
110 V
dc
, 125 V
ac
Electrical isolation contact-coil
100 V
rms
for 1 min
Description of pins
Pin Signal
Description
1 GND
Protective
ground
2, 3, 4, 5, 10, 12 NC
Not used
6
NAL_NO
Non-urgent alarm: contact normally open
7
DAL_NO
Urgent alarm: contact normally open
8
SGND_485 Signal ground (connected with pin 1)
9
RX_485-
RS485 input (negative)
11
TX_485-
RS485 output (negative)
13
NAL_NC
Non-urgent alarm: contact normally closed
14
DAL_NC
Urgent alarm: contact normally closed
15
AL_COM
Common for Urgent and Non-Urgent Alarms (Alarm relays)
5.1.4 External clock source interface
Connector type
BNC 75 Ohm, male
Signal level
According to ITU-T Rec. G.703.10 (from 375 mV to 3 V)
Frequency
2048 kHz +/- 50 ppm
5.2 Power
supply
Powering -40,5
V
dc
- 72 V
dc
Power consumption
No more than 2 W
