Connecting relay control to power supply unit - OPT100

OPT100 Installation Guide
Document code
M211857EN
Revision
V
Language
English
Product
OPT100
Document type
User guide
  • Relay control cable (marked RELAY, Vaisala item CBL210539)
  • Screwdriver with 3-mm-wide (0.12‑in) slotted head
  • Adjustable wrench
  1. Open the cable gland marked Relay control out on the DGA monitor. Remove the plug and store it for later use.
  2. Insert the relay control cable through the outer nut and the seal insert, and start inserting the cable through the cable gland. Stop when you reach the section of the cable where the metal braid is exposed.
  3. Bend the cable braid over the seal insert so that it will make contact with metal when the cable gland is tightened.
  4. Push the outer nut and the seal insert against the contact socket of the gland and tighten the outer nut. See Figure 1 for recommended tightening torques.
  5. Inside the DGA monitor, connect the wires to terminal block Y2:
    Table 1. Terminal block Y2 wiring
    Signal

    Wire color

    Vaisala cable CBL210539

    		 Terminal
    Relay 1 control + White 1
    Relay 1 control − Brown 2
    Relay 2 control + Green 3
    Relay 2 control − Yellow 4
    Relay 3 control + Grey 5
    Relay 3 control − Pink 6
    Figure 1. Terminal block Y2 wiring
  6. Open the cable gland marked Relay control in on the power supply unit. Remove the plug and store it for later use.
  7. Insert the relay control cable through the outer nut and the seal insert, and start inserting the cable through the cable gland. Stop when you reach the section of the cable where the metal braid is exposed.
  8. Bend the cable braid over the seal insert so that it will make contact with metal when the cable gland is tightened.
  9. Push the outer nut and the seal insert against the contact socket of the gland and tighten the outer nut. See Figure 1 for recommended tightening torques.
  10. Inside the power supply unit, connect the wires to terminal block X4:
    Table 2. Terminal block X4 wiring
    Signal

    Wire color

    Vaisala cable CBL210539

    		 Terminal
    Relay 1 control + White 2
    Relay 1 control − Brown 3
    Relay 2 control + Green 5
    Relay 2 control − Yellow 6
    Relay 3 control + Grey 8
    Relay 3 control − Pink 9
    Figure 2. Terminal block X4 wiring