CONTENTS PROPER USE AND SAFETY REQUIREMENTS ..........1. INTRODUCTION ....................1.1. General Features .................... 1.2. Technical Features ..................1.3. LED Descriptions ................... 1.4. LED Warnings ....................1.5. Function Table ....................1.6. Use of the Device ................... 1.7. Time Setting ....................1.8.
PROPER USE AND SAFETY REQUIREMENTS Cut all the power when connecting and disconnecting the device to a panel. Do not clean the device with a solvent or similar material. Only use a dry cloth. Please do not intervene to the device when a technical problem is encountered and get in contact with a technical service within the shortest time.
1. INTRODUCTION 1.1. General Features Electronic time relays are microprocessor-based control devices used in time-criti- cal processes. These devices are specially designed to activate or deactivate a circuit or a system within the set time and function. This relay group, which is gen- erally used in the control panels of power circuits, can basically control the system by changing the relay positions with or without delay.
1.3. LED Descriptions Select Mode Supply LED x1 Multiplier Trigger Information LED x0.1 Multiplier Time Setting Help LED Relay Output Information LED Time Scale 1.4. LED Warnings Table:1...
1.6. Use of the Device ZMN21 Time Relays; ZMN21 model is a multi-mode time relay model. Mode selection can be made with the first potentiometer on it. Time setting and mode selection are read only when the device is first turned on.
F Mode: With the application of supply voltage and trigger signal, the set Toff time starts count- ing and the relay pulls out at the end of the time. With the interruption of the trigger signal, the Ton time starts counting and the relay changes its position at the end of the time. G Mode: With the application of supply voltage and trigger signal, the relay remains in the pulled position for the set Ton time.
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