32
Figure 47. Logging to USB pendrive
Note 17
►
When connecting the USB stick to the H401-T-CONTROLLER, a pendrive icon
appears on
the Homepage. If you activate the logging on USB drive, a red dot appears on the pen drive, to remind that
the USB pendrive should not be disconnected from the H401-T-CONTROLLER, see Figure 47.
8.2.4
Al
a
rms
When H401-T-CONTROLLER triggers on alarm, the contact closure closes its circuit (see Figure 8).
Safety extra low voltage powered alarm equipment, not exceeding stated contact rating, may be connected to the
screw terminal. Refer to Figure 8 for alarm contact rating.
H401-T-CONTROLLER also allows activating visual and audible alarms.
To set the alarms specifications, press on the Alarms icon
; see Figure 48(a) then follow the
indications below:
1
Insert the alarm time; i.e. the time for which the temperature of the Heating Devices may remain outside
the allowed tolerance before the controller triggers in alarm, see 1 in Figure 48(b)
Note 18
►
The alarm time range is 5-20 minutes.
2
Insert the
Tolerance
value, see 2 in Figure 48(b). This value defines the allowed tolerance form the set
point.
Note 19
►
The tolerance value range is 0.1-2.0 °C
3
Insert the transient time; i.e. the maximum time that the system can take to reach a new set point, without
triggering the alarm, see 3 in Figure 48(b).
3
2
1
4
a
b
Figure 48. Alarms settings. (a) How to enter the Alarm setting menu; (b) Alarm configuration