Danfoss DGS Series User Manual

Readout the attached gas sensor type.
1: HFC grp 1
R1234ze, R454C, R1234yf
R1234yf, R454A, R455A, R452A
R454B, R513A
2: HFC grp 2
R407F, R416A, R417A
R407A, R422A, R427A
R449A, R437A, R134A
R438A, R422D
3: HFC grp 3
R448A, R125
R404A, R32
R507A, R434A
R410A, R452B
R407C, R143B
4: CO
5: Propane (R290)
1 5 N - Sensor type
Full scale range 0 32000 HFC: 2000
CO: 20000
R290: 5000
ppm Full scale ppm
Gas 1 Days until next calibration 0 32000 HFC: 365
CO: 1825
R290: 182
days Days till calib
Gas 1 Estimates how many days remaining for sensor 1 0 32000 - days Rem.life time
Status of the critical alarm relay:
1: ON = no alarm signal, coil under power - normal
0: OFF = alarm signal, coil depowered, alarm situation
0 1 - - Critical Relay
Status of the warning relay:
0: OFF = inactive, no warning active
1: ON = active warning, coil under power
0 1 - - Warning Relay
Status of the Buzzer:
0: inactive
1: active
0 1 - - Buzzer
Gas 2 Days until next calibration 0 32000 HFC: 365
CO: 1825
R290: 182
days 2: Days til calib.
Gas 2 Estimates how many days remaining for sensor 2 0 32000 - days 2: Rem.life time
Activates a mode which simulates an alarm. Buzzer, LED and relays all
activate.
1:-> Test function - no alarm generation possible now
Automatically falls back to Off after 15 min.
0: back to normal mode
0 1 0 - Test Mode
Analogue output max. scaling
0: zero to full scale (e.g (Sensor 0 – 2000 ppm) 0 – 2000 ppm will give 0 – 10 V)
1: zero to half scale (e.g (Sensor 0 – 2000 ppm) 0 – 1000 ppm will give 0 – 10 V)
0 1 HFC: 1
CO: 1
R290: 0
- AOmax = half FS
Analogue output min. value
0: select 0 – 10 V or 0 – 20 mA output signal
1: select 2 – 10 V or 4 – 20 mA output signal
0 1 0 - AOmin = 2V/4mA
Alarms
Critical Limit alarm
0: OK
1: Alarm. Gas limit exceeded and delay expired
0 1 - - Critical limit
0: OK
1: Fault. Out of range under test – over range or under range
0 1 - - Out of range
0: OK
1: Fault. Sensor and head failures
0 1 - - Wrong SensorType
0: OK
1: Fault. Sensor out or removed, or wrong sensor connected
0 1 - - Sensor removed
0: OK
1: Warning. Due for calibration
0 1 - - Calibrate sensor
0: OK
1: Warning. Gas level above warning level and delay expired
0 1 - - Warning limit
Indication if the normal alarm function is inhibited or in normal operation:
0: Normal operation, i.e. alarms are created and cleared
1: Alarms inhibited, i.e. alarm status is not updated, e.g. due to DGS in test
mode
0 1 - - Alarm inhibited
User Guide | Danfoss Gas sensor, type DGS
© Danfoss | Climate Solutions | 2022.01 BC291049702513en-000201 | 23

Danfoss DGS Series Specifications

General

Brand	Danfoss
Model	DGS Series
Category	Accessories
Language	English