BRONKHORST®
Page 18
MASS-VIEW®
series
9.17.051
Mode (FlowDDE parameter 156)
With the “mode” parameter the user can choose if the alarms reset automatically or manually.
When the reset mode is set to automatic, the alarms will be reset when measure reaches the desired
level and the delay time has exceeded.
When the reset mode is manual, the user can reset the alarms in the following ways:
1.
With the “reset” option in the alarms menu.
2.
Via RS-232 (or FLOWDDE / FlowView / FlowPlot).
Writing the value “2” to FLOWDDE parameter 114 resets the alarms.
3.
When the readout screen is visible and an alarm is active, this will be displayed at the top of the
screen (see chapter 3.4.7). By pressing
up
at an alarm situation, the user can reset the alarms
from the readout screen.
Relay
The relays parameter sets the output mode of the relays. The user can choose between disabled,
enabled and pulse. When a relay is active, the relay contact will connect to the 0V signal.
3.4.7 Alarm outputs
The status of the alarms can be read in various ways.
For example when the minimum and maximum alarms are enabled this is
made visible in the readout screen with two markers at the left of the
graph (see picture on the right).
When an alarm arises the corresponding marker will be highlighted and
the header will blink and display the alarm.
The
MASS-VIEW
®
meters have two relays which indicate an alarm situation.
The status of the relays depend on the alarm source and status of the
relay parameter (see table below).
disable
enable
pulse
Relay 1
Relay 2
Relay 1
Relay 2
Relay 1
Relay 2
Min alarm
0
0
1
0
0/1/0/1/0/1…
0
Max alarm
0
0
0
1
0
0/1/0/1/0/1…
Response (min)
0
0
1
1
0/1/0/1/0/1… 0/1/0/1/0/1…
Response (max)
0
0
1
1
0/1/0/1/0/1… 0/1/0/1/0/1…
Counter
0
0
1
1
0/1/0/1/0/1… 0/1/0/1/0/1…
3.4.8 User tag
The User tag can be edited at the menu item
info
.
3.4.9 Alarm contacts
The MASS‐VIEW® flow meter has two alarms connected to a
relay/switch.
This relay is already included in the MASS‐VIEW®.
One side of the switch is connected to ground (pin 4, 0 Vdc)
and the other side is connected to Pin 3 (alarm max).
The other relay is also with one side connected to
Ground (pin4, 0 Vdc) and the other side is connected
to Pin 5 (alarm min).
Switching current: max. 24 Vdc, 0.5 A.
PCB / Alarm max.
PIN 3
(max. 24V, 0.5A)
Relay 1 / Switch 1
PIN 4 0V
PCB / Alarm min.
PIN 5
(max. 24V, 0.5A)
Relay 2 / Switch 2
PIN 4 0V
