10
9
8
7
6
5
4
3
2
1
In addition to the zener barrier fuses (which cannot be replaced) each sensor is individually fused on the base board PCB. If a sensor fails to respond the nominal 5V between blue and brown terminals should be checked and the 160mA quick blow (F) changed if necessary.
Sensor Wiring: The Sensor cable should meet the following specification as listed in the Zener Barrier (ZB1) certificate, see page 16. The total capacitance of the cable must not exceed 6.8uF for EDS/C and EDS/P or 8.8uF for the EDF sensor. Also the inductance or inductance to resistance (L/R) ratio should not exceed 0.06mH or 14uH/Ω respectively.
Typical output wiring: Fig 2 shows the terminal connections and Fig 3 shows typical wiring of output functions. A fused 12V or 24V supply is available on terminal 2 for the operation of low power sounders and beacons, the installation engineer must provide the links to
|
| C |
|
| NON | 20 |
|
|
|
|
|
|
| HAZARDOUS |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ALARM |
|
|
|
|
|
|
|
| AREA |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| provide the | required functions. Remember any sounders or beacons located in the Hazardous | ||||||||||||||||||||||||||||
|
| NO |
| ACCEPT | 19 |
|
|
|
|
|
|
| COMMON |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
| Area must be | certified Flameproof or Intrinsically Safe if fed via an external zener barrier |
| |||||||||||||||||||||||||||
|
|
|
|
| CONTACTS |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| NC |
|
| 18 | - |
| VALVE |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||
|
|
|
|
| contact EDL for | further information. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
| CONNECTIONS |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| C |
|
| 17 | + |
| 12VDC EDL MODEL ONLY |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||
|
| NO |
| A1 CONTACTS | 16 |
|
|
| NC |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
| NC |
|
| 15 |
|
|
| C | A2 CONTACTS | BL | G/Y | BR | BL | G/Y | BR | BL | G/Y | BR | BL | G/Y | BR | ||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| (+VE) | (O/P) | (+VE) | (O/P) | (+VE) | (O/P) | (+VE) | (O/P) | ||||||||||||
|
|
|
|
|
| 14 |
|
|
| NO |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
| 0V |
|
|
|
|
|
|
|
|
|
|
|
| SENSOR 1 |
|
|
| SENSOR 2 |
|
|
| SENSOR 3 |
|
|
| SENSOR 4 |
| |||||
|
|
|
|
|
| 13 |
|
|
| NC |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
| FUSED 0/P | 12 |
|
|
| C | FAULT CONTACTS |
|
|
|
|
|
|
|
| HAZARDOUS AREA WIRING |
|
|
|
|
|
| |||||||||||
|
| +VE I/P |
| 11 |
|
|
| NO |
|
|
| FIG 2 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||
|
|
| SAFE AREA WIRING |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
12
34
5 
6
SOUNDER/BEACON
12
13 
15
11 | 16 |
10
14 | 8 |
RELAY TO DRIVE
SHUT DOWN FUNCTIONS,
FANS, ETC.
9
FIG 3
Relay contact rating: 2A at 240VAC Non Inductive
SOLENOID VALVE
It is important that only a 12VDC solenoid valve is used regardless of the input supply voltage. Further more, solenoid valves must be exactly the same specification as the low consumption type supplied by EDL to prevent damage to the circuit board components.
ED810 INSTRUCTION MANUAL | 5 |