CAUTION
To prevent the voltage measurements from being swapped around, DEIF recommends that the voltage measurement
terminals are fitted with voltage encoding pins. Check that the wiring to the terminals has not been swapped around during
installation if voltage encoding pins are used.
See Mounting voltage encoding pins for an example of how the voltage
encoding pins can be placed.
4.4.2 Mounting voltage encoding pins
Voltage encoding pins are provided with the controller to prevent voltage terminal blocks from being mounted in incorrect positions.
Using the voltage encoding pins is not mandatory.
CAUTION
Swapping the voltage measurement terminals around can lead to dangerous situations. Check that the wiring to the
terminals has not been swapped around during installation if voltage encoding pins are used.
Optional installation equipment
Tool
Function
Long nose pliers Improves the handling and placement of the voltage encoding pins.
Installing voltage encoding pins
Follow the procedure described below to install the voltage encoding pins.
INFO
For safety reasons the voltage encoding pins are not designed for reuse. Once they are installed it is difficult to remove the
pins without damaging the equipment. Ensure the voltage encoding pins are installed in the correct positions the first time.
1. Identify the terminals where you want to place the encoding pins.
a. For example, terminal 1 in terminal group 1-2-3-4 and terminal 5 in terminal group 5-6-7-8 on the ACM3.1 module.
2. Remove the terminal blocks from the module.
3. Place the J-shaped encoding pin in one of the slots next to a terminal pin on the module. The encoding pin is secured when you
hear it click into position.
a. For example, next to the pin for terminal 1 on the ACM3.1 module.
4. Slide the flat encoding pin into the groove on the terminal block of the second terminal group that matches the position of the
encoding pin placed in step 3.
a. For example, the groove at terminal 5 of the terminal block for terminal group 5-6-7-8 for the ACM3.1 module.
INSTALLATION INSTRUCTIONS 4189340909I UK Page 34 of 144
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