Delta OHM HD2817T Series, Manual

Page: 18 / 64

18
Relay RL1 ( Working relay RL1 )
It is used to set the functioning parameters of the RL1 working relay.
The following screen will appear:
RELAY RL1
Mode : T Temp.
Act Above : 100.0 °C
Act Below : 25.0 °C
Hysteresis : 1.0 °C
On Error : Inactive
<UP> <DOWN> select
<ESC> exit/cancel
Use the
 
arrows to select the line to be modified and press ENTER to access the
corresponding submenu.
Mode
It defines the physical quantity associated to the RL1 relay. To change the quantity,
use the
 
arrows to select the line Mode and confirm with ENTER. The RELAY RL1
MODE menu will open.
RELAY RL1
MODE
For. OFF T Temp.
*
RH Rel.
Tw Wet bulb
AH Abs.
MR Mix.
Td Dew For. ON
<ESC> exit/cancel
The current item is indicated by an asterisk (“RH Rel.” in the example): to change it,
use the
 
arrows to select the new item and press ENTER. The asterisk will indicate
your new selection. Press ESC to return to the previous menu.
You can associate the following quantities to the RL1 relay:
•
RH Rel. corresponds to relative humidity,
•
AH Abs. corresponds to absolute humidity,
•
MR Mix. corresponds to mixing ratio,
•
Td Dew. corresponds to dew point,
•
T Temp. corresponds to temperature,
•
Tw Wetp. corresponds to the wet bulb temperature
•
For. OFF (Force OFF) blocks the relay in the OFF state.
•
For. ON (Force ON) blocks the relay in the ON state.
The last two items are useful during system maintenance and instrument
configuration.