User's Manual

EMS Wireless Operator’s Manual
EkoLink II
45
Alarm
N/C
Pin 1: V-ALARM
Pin 2: ALARM-OC
Pin 3: GND
Pin 4: Not Connected
Pin 5: EXT-ALARM-1-IN
Pin 6: ALARM-2-NC
+5VDC
uCont
J27
General Circuit Topology Typical Application Circuit
R
** - Use R to limit current
to 20mA
Figure 19. J27 Application, Single Hub using internal supply
voltage.
The Hubs may also be configured in an OR configuration as seen in Figure
12. External alarm circuitry must be current limited to 20mA.
Alarm
N/C
Pin 1: V-ALARM
Pin 2: ALARM-OC
Pin 3: GND
Pin 4: Not Connected
Pin 5: EXT-ALARM-1-IN
Pin 6: ALARM-2-NC
+5VDC
uCont
J27
General Circuit Topology
Typical Application Circuit
R
** - Use R to limit current
to 20mA
Alarm Voltage sense line pulled
low in alarm condition
Alarm
N/C
Pin 1: V-ALARM
Pin 2: ALARM-OC
Pin 3: GND
Pin 4: Not Connected
Pin 5: EXT-ALARM-1-IN
Pin 6: ALARM-2-NC
+5VDC
uCont
J27
General Circuit Topology
Alarm
N/C
Pin 1: V-ALARM
Pin 2: ALARM-OC
Pin 3: GND
Pin 4: Not Connected
Pin 5: EXT-ALARM-1-IN
Pin 6: ALARM-2-NC
+5VDC
uCont
J27
General Circuit Topology
Alarm
N/C
Pin 1: V-ALARM
Pin 2: ALARM-OC
Pin 3: GND
Pin 4: Not Connected
Pin 5: EXT-ALARM-1-IN
Pin 6: ALARM-2-NC
+5VDC
uCont
J27
General Circuit Topology
Figure 20. J27 Application, OR Configured Hubs using external
supply voltage.