GB
DESCRIPTION MSA
10 ULTIMA
®
X
3 TM
Relays
The ULTIMA
®
X
3 TM
continues to monitor for all gas alarms and faults and will
activate the relays even when the display is latched/locked by a previous alarm
condition. The ULTIMA
®
X
3 TM
is shipped with all gas alarm relays configured for
3 alarm levels common to all sensors. Using the ULTIMA/ULTIMA X Controller
(Æ Section 4.1) or ModBUS command each relay can be assigned to one sensor,
providing one level of alarm for each.
The relays have Single Pole Double Throw (SPDT) contacts rated at 30 V DC or
250 V AC (5 A).
The relays may be configured as:
Normally energised/de-energised
Increasing/decreasing level alarm
Latching/non-latching.
Sensor
A sensors gas type, alarm levels and relay configuration are automatically
recognised when connected to a ULTIMA
®
X
3 TM
Gas Monitor,. When a sensor is
removed, a "Sensor Missing" scrolling message is displayed; this can be
corrected by:
Reconnecting a sensor to that position or
Manually taking the sensor 'off-line' via:
ULTIMA/ULTIMA X Controller, by sending a sensor disable command or
ModBUS command write to a control register.
A missing or unused sensor position returns a gas value of -99.9 in response to a
ModBUS request for gas level value starting at address base +207.
To Next Page
Loading...
Need help?
General
