Vemer FHT Series User Manual page 11

Reverse operating mode with set-point and differential change-over
from digital input [PRO=8]
• When in this mode both outputs operate in reverse, with set-point 1 /differential 1 or
set-point 2/differential 2, depending on the status of the digital input. More precisely,
with set-point 1/differential 1 if the digital input is open and set-point 2/differential 2
if it is closed.
Operating functions are the same as in mode 1. Therefore both set-points [ST1] and
[ST2] and both differentials [DF1] and [DF2] must be confi gured.
Digital
input
open
Digital
input
closed
Operating mode with outputs 1 and 2 respectively in reverse with
set-point 1 and diff.1 and direct with set-point 2 and diff. 2 [PRO=9]
• When in this mode output 1 operates in reverse and output 2 in direct.
It is necessary to confi gure set-points 1 [ST1] and differential 1 [DF1] for output 1,
and set-point 2 [ST2] and differential 2 [DF2] for output 2.
Operating functions are the same as in modes 0 and 1.
If only one output is present it will operate in reverse.
ON
OFF
Alarm operating mode [PRO=10]
• When in this mode output 1 operates in reverse (with dead band) whilst output 2 is
reserved for the alarm.. It is necessary to confi gure set-point 1 [ST1], differential 1
Mode PRO=8
OUT 1
ON
R
OFF
Diff. 1
Set 1
OUT 1
ON
R
OFF
Diff. 2
Set 2
1 output
Mode PRO=9
OUT 1
ON
R
OFF
Diff. 1
Set 1
1 output
- 37 -
User Manual – Thermoregulator FHT
OUT 2
ON
R
OFF
Diff. 1
OUT 2
ON
R
OFF
Diff. 2
2 outputs
OUT 1 OUT 2
R D
Diff. 2
Diff. 1
Set 1 Set 2
2 outputs
OUT 1
R
Set 1
OUT 1
R
Set 2
ON
OFF