CALIBRATION PROCEDURE OF THE INPUT SIGNAL
FACEPLATE DESCRIPTION
g
c
b
f
e
d
a
Green LED (power on),
Red LED (GT running)
Red LED (thermal alarm), yellow LED
(load interrupt alarm, HB option)
Monorev trimmer for calibration of load
interrupt (HB) alarm limit
Monorev trimmer for minimum
calibration of input signal
Monorev trimmer for maximum
calibration of load signal
Dip switch for selection of input signal
(S1, S2, S3)
LINE connection
LOAD connection
Reference connection of 230V line voltage
(HB option with 150V to 300V load)
Reference connection of 480V line voltage (HB option
with 300V to 530V load)
Alarm output
(solid state relay, HB option)
Synchronism signal for
Master/Slave connection
- control signal
+ control signal
Reference voltage for potentiometer power supply (+ 10V)
24 Vac 50/60 Hz power terminal
The solid-state power unit, Gt, is supplied factory calibrated for 0..5V, 0..10V, 0..20mA, 4..20mA, 10Kohm potentiometer.
Minimum and maximum values are adjusted with two monorev trimmers (d,e).
Input signal type is selected with the adjustment f dip switches (S1,S2,S3).
125
Ω
100K
Ω
100K
Ω
d
4%
T
18%
V/mA
e
In
82%
96%
0-10V
4-20mA
0-20mA
f
S1-S3
0-5V
V/mA
In
Rin
On
Off
125
Ω
Control signal
Dip Switch Position
S1
S2
S3
0...5Vdc
OFF
OFF
ON
0...10Vdc
ON
OFF
ON
0...20mA
OFF
ON
ON
4...20mA
OFF
ON
OFF
Minimum adjustment trimmer (d) turned fully counterclockwise sets the start conducting limit at 4% of the signal; turned fully
clockwise, the minimum conducting limit is set at 18% of the input signal.
Maximum adjustment trimmer (e) turned fully clockwise sets the full conducting limit at 96% of the signal; turned fully
counterclockwise, the full conducting limit is set at 82% of the input signal.
