| Dimming interface |
B type only: apply a resistance, 1–10 V DC or a 10 V PWM signal between DIM+ and DIM− to adjust the constant-current level. DIM+ is purple and DIM− is pink. Do not connect DIM− to the negative power output (−V). |
| Resistance dimming |
Typical reference: 10, 20, 30, 40, 50, 60, 70, 80, 90 and 100 kΩ correspond respectively to 10, 20, 30, 40, 50, 60, 70, 80, 90 and 100% of rated current for one driver. For N drivers in synchronized dimming operation, use the corresponding resistance divided by N (10 kΩ/N through 100 kΩ/N). |
| Voltage dimming |
Typical reference: 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 V DC correspond respectively to 10, 20, 30, 40, 50, 60, 70, 80, 90 and 100% of rated current. |
| PWM dimming |
10 V PWM signal, 100 Hz–3 kHz. Typical reference: duty cycles of 10, 20, 30, 40, 50, 60, 70, 80, 90 and 100% correspond respectively to the same percentages of rated current. |
| Open dimming circuit |
The typical tables specify 95–108% of rated current with the dimming input open. They do not specify a guaranteed zero-current setting. |
| Full-off switching |
Built-in B-type dimming cannot turn the lighting fixture completely dark. Use the external switch-and-relay connection shown in the catalog to turn the fixture ON/OFF and achieve 0% brightness. Dimming remains connected across DIM+ and DIM−; the relay switches the supply as shown. The HLN-80H relay example labels its adjuster 0–100 kΩ, but the current-reference table covers 10–100 kΩ; this does not establish dim-to-off at 0 Ω. |
| B-type LED connection |
For the illustrated B-type dimming application, connect directly to LEDs; the catalog states that using additional drivers is not suitable. Do not treat the separate generic CV illustration as approval for an added driver in this dimming circuit. |