Proton InteliSENS PD30 - Relay Outputs; Relay Outputs Connection; Relay Outputs Electrical Specifications

Page 50 of 68
Proton Products InteliSENS PD30 Instruction Manual (Issue 1a)
RELAY OUTPUTS
Relay outputs connection
Four relay outputs are fitted as standard and may be accessed through the “INTERFACE” connector.
Connector type: DB25 female (socket)
Pin
Designation
Description
Notes
17
NO1
Relay 1 normally open contact
5
COM1
Relay 1 common
18
NO2
Relay 2 normally open contact
6
COM2
Relay 2 common
19
NO3
Relay 3 normally open contact
7
COM3
Relay 3 common
20
NO4
Relay 4 normally open contact
8
COM4
Relay 4 common
S
Shield
Shield
Ensure that the cable shield is connected to
this via the plug shield connection.
Relay outputs electrical specifications
 All contacts are isolated and voltage free.
 If the relay contacts are used to switch inductive loads, then suppressors must be fitted to
clamp voltage spikes.
Specification
Minimum
Typical
Maximum
Units
DC voltage between contacts
24
VDC
Contact-to-earth voltage
50
V
Current
1
A
On resistance (at a current of 10mA)
0.1
Ω